Hi~
[Easy]
SliderMultiplier:0.599999999999999 - actually it shouldnt be fixed, but i'd suggest you to fix this, otherwise many modders will complain about this again~
00:16:828 (1,2,3) - looks random
00:54:776 (2) - add a repeat like what you did at 01:46:059 (2) - ? sounds much better to me
01:23:494 (2) - i prefer something like this
http://osu.ppy.sh/ss/41946501:54:264 (2) - finish at the end instead of whistle? more fitting music imo
01:58:366 (3) - add whistle here and remove it from the previous note to follow hi-hat?
02:37:340 (2) - same as 00:54:776 (2) -
02:45:546 (2) - ^
02:54:135 - whistle sounds better here
[Normal]
SliderMultiplier:0.999999999999999 - same as Easy
00:32:212 (4) - change this into a slider? empty of 4 beats isnt that great imo
00:42:982 (1) - since BPM is really fast. this slider is too soon after a spinner for a Normal diff. and it's not that important here.so better to remove it.
01:38:879 (1) - bad overlapping imo. maybe something like this?
http://osu.ppy.sh/ss/41948101:39:905 (3) - ^ same
http://osu.ppy.sh/ss/41948201:58:366 (3) - add whistle to follow hi-hat?
01:59:392 (1) - add clap here like Easy diff.
02:22:725 (3) - remove this note and start the next spinner from here? fits music better and spinner length will be longer so much easier to pass it o_o
02:38:110 - add finish instead of clap for consistency with other diffs
02:40:417 (1) - copy paste from (3)? looks better imo
02:54:135 - whistle is more fitting here
03:02:982 (1) - add finish here like other diffs
[Hard]
00:54:776 (3) - whistle sounds better here
01:33:879 - i'd add a clap here if possible ;_; feels empty here
01:59:392 (1) - same as Normal
02:54:135 - finish is too much, whistle is enough here
03:05:033 (5) - this combo is too long compared with others, so newcombo here
[Insane]
considering setting of Hard diff, HD-1 would be more suitable for this diff imo
00:54:776 (5) - whistle sounds better
01:19:776 (6) - maybe clap here?
02:54:135 (7) - whistle would be nice here
02:58:879 (1,3,5,7) - maybe rearrange them like this? flow will be more natural imo
http://osu.ppy.sh/ss/419513not much to say, good job! starred since i like the song~

good luck!