Easy:
00:15:635 (1) - Mid control point one grid up?
00:22:746 (5) - Ten grids down so it becomes like this ? Looks more neat. ~
00:19:191 (3) - If ^, then either stack this with (5) or make it vertically flipped of (5). ~
00:34:302 (1,2,3,1,2,3) - This is kinda boring, since you barely have any movement going on here. For this kind of slider, you only barely need to hold the button at the beginning and wait till it's finished, and plus they're all so close and almost on the same place. So I recommend you place it on more different places so it gets a bit more movement.
00:44:079 - You totally should add a note here. Feels empty without it, and better with a note there.
00:44:524 - ^
01:04:524 (1) - Oh God so creative. <3
01:10:302 (2) - One grid right so it gets a bit more of effect with the next slider.
01:27:635 (2) - Uh, this slider sure is ugly. >_<; Can't you make it a more neat?
01:48:524 (4,1) - Such a blank space between it. Feels so weird, so place more notes.
02:24:079 - Weird blank space again~ Place a slider here that goes till 02:25:413? Like this one I took out of my weird imagination or something~ <3
Normal:
Approach Rate -1.
00:02:302 (2) - Better make (2) stacked to (3) like this.
00:07:857 (2) - Remove the whistle from the end. ~
00:10:524 (1,2,1) - Will get better if you delete (2), push the first (1) 1/2 beat forward and push the other (1) 1/2 beat back and make it 1/2 beat longer. Also, obviously, fix the spacing. For reference, the timeline should be something like this.
00:15:635 (1,2,3) - Probably better if you make it a 1/2 repeat slider instead, since it's a normal diff and all.
00:22:524 (3,4,5) - ^
00:24:079 (1,2,3) - ^
00:27:191 (2) - One grid right so it gets more neat / to keep spacing even.
00:34:746 (2,3,4,5) - Too hard for a normal, so you either would have to stack them all, or make it two 1/2 sliders, or a single 1/2 slider with two repeats, or make it a 1/1 beat slider with one repeat ( which is what I recommend).
Actually, I'd like to state that the part between 0:30:302 ~ 0:44:524, if you keep a mostly 1/1 beat will make the map a lot more consistent then it currently is.
01:04:079 (1,2,3,4,1,2,3,4,1,2,3) - Wuuuuuut, so many 1/2 together in a normal diff. Place some 1/1 spaced sliders/notes between them so you make it more suitable to a normal diff.
01:18:524 (1,2,3,4,5,6,7,8) - Also, too hard for a normal diff. Mix some sliders in. ;n;
01:27:191 ~ 01:48:524 - This whole part is too hard for a normal diff. My suggestion is that you try to keep a 1/1 pace.
02:14:079 (4,5) - Push (4) one grid left, and (5) would work better if stacked with (4).
02:21:191 (4,5) - Stack 'em? ~
02:34:080 (2,3) - Stack them like this?
02:40:080 (1) - Remove the finish from the return.
02:52:524 (1) - Remove new combo.
Hard:That's it, sorry for being a little late. Yesterday wasn't a very good day. x_x;
00:36:524 (1) - Remove new combo.
00:37:857 (3) - New combo.
00:38:302 (1) - Remove new combo.
00:51:635 (1,3,4,5) - Since this pattern is a somewhat jump, remove the new combo from (1) and add new combo to (3).
01:16:524 (1,2) - Remove the new combo from (1) and add new combo to (2).
01:24:524 (2,3,4,5) - Eeeeh, this jump is kinda sudden, since (2) is stacked to (1) and then suddenly some JUMP JUMP. Reduce it a bit? ~
01:40:524 (1,2,3,4,5,6,7,8,9) - I don't think these notes fits here, since the audio at this part suddenly drops down, so you'd want to make it into something else.
01:49:413 (1) ~ 01:55:413 (4) - Suddenly such big jumps out of nowhere. o_o Reduce it a bit, it's just plain wrong to make a TOTALLY harder part just to make the map hard itself. It will only cause people to rage.
02:16:968 (4,5,7) - Add whistle to (4) and remove whistle from (5) and (7).
02:25:857 - Don't use 1,5x for this whole section, since it's suddenly so fast. If anything, use 1,2x at max. It doesn't fits how the slider velocity suddenly goes fast after a part where the song doesn't change from calm to fast part.
02:58:746 (3,4,5) - Better not stack these, since it suddenly changes from 1/2 to a bit longer notes.
Anyways, good luck. õ>