Major issues in the map: it is highly recommended to fix them.
Minor issue in the map: you don't have to follow them exactly, but I recommend you to.
Suggestions: those are personal opinions, feel free to follow them or not.
Comments.
If there's one red line in the whole mod post, or three blue lines, I won't star the map.
Overall:
There's an empty .osb file, remove it.
All three diffs must be the same length. Map until the end for Easy and Normal.
Easy:
00:21:303 (3) - [form] Move this one one grid (lvl 3) right so that it lines up with (2) and looks better.
00:22:111 (1) - [spacing] Slightly too close to previous object. Move 00:22:111 (1,2,3) - one grid (lvl 3) right.
00:22:111 (1,2,3) - [form] Move those one grid down so that (1) lines up with (4) and looks better.
00:38:726 (1,2,3,4,5) - [spacing] What distance snap did you use for that section ? I suggest you re-space it with 0,8x distance snapping like the rest of the song. It doesn't affect gameplay much, but it will look a lot nicer.
00:47:495 (3) - [spacing] Too close to previous object.Try moving it 3 grids (lvl 3) down. (you'll have to respace the next notes)
00:56:495 (5) - [spacing] Too close to previous object. Place (5) where (6) is and move (6) under (5) so they line up.
00:57:880 (1) - [spacing] This is an anti-jump, which is confusing for Easy maps. And if you fix ^ it will get even closer to previous combo. You can leave it as it is though, since it's a new combo, and there's a little time gap between the two notes.
00:58:572 (2) - [spacing] Too close to previous object. Fixing it is up to you and depends on where you placed (1) if you changed its location.
01:00:418 (1) - Same comment as 00:57:880.
01:00:418 (1,2) - [form] These aren't stacked properly.
01:08:265 (1,2,3) - [spacing] Those are too far apart. Avoid this kind of "jump" in Easy.
01:14:957 (3) - [spacing] Too close to (2), move it one grid (lvl 3) down and one right.
01:19:341 (4) - [spacing] Too close to (3).
01:20:726 (1) - Same comment as 00:57:880.
01:21:188 (2) - [spacing] Too close to (1). Move it three grids (lvl 3) down.
01:22:803 (4) - [spacing] Very slightly too close to (3). Move it one grid right.
01:25:572 (2) - [spacing] Too far from (1). Move it two grids left. (if you do move 01:26:034 (3) - one grid right)
01:28:341 (1) - [form] Move it one grid left so that it lines up with (2).
01:32:034 (1) - [form] This slider is hidden by the previous one. It looks bad, and can be confusing to play. You have to place it somewhere else on the map, paying attention to its distance to the previous one.
01:32:034 (1,2,3) - Those are too close to each other.
01:34:803 (6) - [spacing] Too far from previous object. Move it three grids (lvl 3) left. And one down so that it lines up with (6).
01:35:265 (7) - [spacing] Too close to previous object.
01:35:265 (7,1,2) - [form] Those three sliders overlap, which is very unpleasant to the eye.
I highly advice you to choose a distance snapping (less than 1x) and stick to it for the whole song, for the Easy diff at least.
Normal:
There are a lot of spacing errors in this one too... Choose a distance snap value, then stick to it until there's a break (after which you can change that value or not). Check all your map and re-space everything. Be careful however, a map with too strict distance snapping can be boring. Allow yourself some jumps or anti-jumps sometimes (not too hard though).
Hard:
00:25:572 (3,4,5) - [form] Those are too far apart: draw (4) and (5) closer. Generally speaking you should avoid changing the distance snapping whithin combos.
00:43:111 (3) - [spacing] Too close to previous object. Use distance snapping to fix it.
00:43:803 (4) - ^
00:52:688 (4) - ^ Distance to (3) should be the same as the distance between (3) and (4).
01:03:418 (7) - [spacing] Too close to previous object.
01:11:726 (5) - ^
02:02:726 (6) - ^
02:05:495 (1,2,3) - [spacing] Uneven spacing.
02:10:111 (3) - [spacing] Too close to previous object.
02:11:034 (5) - ^
02:12:303 (8) - [form] This slider is overlapped by two notes, it looks awful although it's still playable. Try rotating this slider by 90° counter-clockwise.
Overall, the map had too many spacing errors to be fun to play.
You can ask a remod anytime.
Minor issue in the map: you don't have to follow them exactly, but I recommend you to.
Suggestions: those are personal opinions, feel free to follow them or not.
Comments.
If there's one red line in the whole mod post, or three blue lines, I won't star the map.
Overall:
There's an empty .osb file, remove it.
All three diffs must be the same length. Map until the end for Easy and Normal.
Easy:
00:21:303 (3) - [form] Move this one one grid (lvl 3) right so that it lines up with (2) and looks better.
00:22:111 (1) - [spacing] Slightly too close to previous object. Move 00:22:111 (1,2,3) - one grid (lvl 3) right.
00:22:111 (1,2,3) - [form] Move those one grid down so that (1) lines up with (4) and looks better.
00:38:726 (1,2,3,4,5) - [spacing] What distance snap did you use for that section ? I suggest you re-space it with 0,8x distance snapping like the rest of the song. It doesn't affect gameplay much, but it will look a lot nicer.
00:47:495 (3) - [spacing] Too close to previous object.Try moving it 3 grids (lvl 3) down. (you'll have to respace the next notes)
00:56:495 (5) - [spacing] Too close to previous object. Place (5) where (6) is and move (6) under (5) so they line up.
00:57:880 (1) - [spacing] This is an anti-jump, which is confusing for Easy maps. And if you fix ^ it will get even closer to previous combo. You can leave it as it is though, since it's a new combo, and there's a little time gap between the two notes.
00:58:572 (2) - [spacing] Too close to previous object. Fixing it is up to you and depends on where you placed (1) if you changed its location.
01:00:418 (1) - Same comment as 00:57:880.
01:00:418 (1,2) - [form] These aren't stacked properly.
01:08:265 (1,2,3) - [spacing] Those are too far apart. Avoid this kind of "jump" in Easy.
01:14:957 (3) - [spacing] Too close to (2), move it one grid (lvl 3) down and one right.
01:19:341 (4) - [spacing] Too close to (3).
01:20:726 (1) - Same comment as 00:57:880.
01:21:188 (2) - [spacing] Too close to (1). Move it three grids (lvl 3) down.
01:22:803 (4) - [spacing] Very slightly too close to (3). Move it one grid right.
01:25:572 (2) - [spacing] Too far from (1). Move it two grids left. (if you do move 01:26:034 (3) - one grid right)
01:28:341 (1) - [form] Move it one grid left so that it lines up with (2).
01:32:034 (1) - [form] This slider is hidden by the previous one. It looks bad, and can be confusing to play. You have to place it somewhere else on the map, paying attention to its distance to the previous one.
01:32:034 (1,2,3) - Those are too close to each other.
01:34:803 (6) - [spacing] Too far from previous object. Move it three grids (lvl 3) left. And one down so that it lines up with (6).
01:35:265 (7) - [spacing] Too close to previous object.
01:35:265 (7,1,2) - [form] Those three sliders overlap, which is very unpleasant to the eye.
I highly advice you to choose a distance snapping (less than 1x) and stick to it for the whole song, for the Easy diff at least.
Normal:
There are a lot of spacing errors in this one too... Choose a distance snap value, then stick to it until there's a break (after which you can change that value or not). Check all your map and re-space everything. Be careful however, a map with too strict distance snapping can be boring. Allow yourself some jumps or anti-jumps sometimes (not too hard though).
Hard:
00:25:572 (3,4,5) - [form] Those are too far apart: draw (4) and (5) closer. Generally speaking you should avoid changing the distance snapping whithin combos.
00:43:111 (3) - [spacing] Too close to previous object. Use distance snapping to fix it.
00:43:803 (4) - ^
00:52:688 (4) - ^ Distance to (3) should be the same as the distance between (3) and (4).
01:03:418 (7) - [spacing] Too close to previous object.
01:11:726 (5) - ^
02:02:726 (6) - ^
02:05:495 (1,2,3) - [spacing] Uneven spacing.
02:10:111 (3) - [spacing] Too close to previous object.
02:11:034 (5) - ^
02:12:303 (8) - [form] This slider is overlapped by two notes, it looks awful although it's still playable. Try rotating this slider by 90° counter-clockwise.
Overall, the map had too many spacing errors to be fun to play.
You can ask a remod anytime.
, example:
) sliderart? 
, it will be more awesome