Hi, some modding for a miku song ~
[Easy]
Combos are perfect, spacing is perfect and nothing confusing, also the hitsounds are right, nothing to change here ~
[Normal]
01:08:585 (3) - Snap the circle.
02:13:508 (4) - New combo
02:40:278 (4) - You didnt use the whistle in the whole map, this feels weird, remove the whistle
[Hard]
00:40:124 (7) - Stack it with the previous slider end, seems more natural with your "jumps".
01:04:585 (1,2,3) - This is confusing, stack them or make a jump like you did with the other circles.
02:05:508 (5,6) - if you start these circles on the end of this slider: 02:05:047 (4) - seems to be more fluid
02:09:508 (4) - New combo
02:40:278 (6) - Same as in normal, sounds weird because you didnt use whistle on the whole song.
[Insane]
00:05:202 (7) - Add a whistle to avoid confusion
The first part seems to have a lack of hitsounds, maybe you should put more whistles
00:31:970 (1,1) - Remove those new combo, doesnt make sense at all
00:48:893 (1) - Remove new combo
00:49:508 (3) - Start new combo here
01:01:508 (1,1) - Same as before, doesnt make sense those new combo
01:15:508 (5,1) - No stack?
01:31:047 (1,1) - Same as before, maybe you wanted to do something? :/ Just to explain it, there are a lot of new combos in a row, just one slider and then another slider, remember new combos starts at musical phrases and they are played by a different player in TAG mode.
01:41:355 (2,1) - Stack
01:51:201 (1,2,3) - Just my opinion but I think this would be easier to read if they were streams of two.
02:00:585 (1,1) - You know, combos
02:39:970 (1,1) - ^
02:50:739 (1) - This is not an error, look in the other difficulties the only use you did with whistle and now this, you started using whistle in this end-kiai and it works pretty well, you should do the same in the other difficulties.
02:59:662 (1,1) - Combos
03:09:816 (1,2) - This is confusing, change places or dont stack them.
[Extreme]
00:03:663 (1) - Remove new combo
00:04:279 (2,3) - This is confusing, there is a stream in the song isnt it? Most people know this song so they may fail at this.
00:11:048 (1) - Remove new combo
00:30:124 (1) - If you follow the vocals, remove this new combo
00:30:431 (3) - And start it here
00:36:816 (1) - Remove new combo
00:49:816 (2,3,1) - Wait, this is really confusing, i dont see any flow here, even if they are jumping streams they are not natural, you can switch to 1/2 instead of the stream.
00:51:970 (6,1,2,3,4,5) - Feels weird, too much stack suddenly.
01:06:432 (1) - Remove new combo
01:06:893 (1) - Remove new combo
01:08:585 (1) - ^
01:16:585 (1) - ^
01:52:432 (1) - ^
01:52:893 (4) - New combo
01:53:355 (1) - Remove new combo
02:10:278 (1) - ^
02:10:893 (1) - ^
02:15:355 (1) - ^
02:16:893 (4) - New combo
02:17:201 (1) - Remove new combo
02:19:662 (3) - New combo
02:20:278 (1) - Remove new combo
02:20:585 (1) - ^
02:31:508 (5,6) - Unpredictable :/
02:32:893 (1) - Remove new combo
02:44:124 (1) - ^
02:59:662 (1,1) - Remove those new combo
Thats all I think, too much difficulties xD, fix those little things and you are a steap closer to rank it
Good luck!