hope i won't copy suggestions of prev modder.
General
i'd cut mp3, but it's not necessary since it fits rules.
Hard
00:49:481 (8,1) - even with nc this jump is sudden,cuz you used that spacing with 3/4patterns and 1/2 here. replace 1 a bit closer to 8
01:32:736 (1,2,3,4) - here vice versa, raise spacing, it looks as 3/4 again but in fact it's 1/1
02:19:248 (1,2,3,4) - same as before 1/1
02:49:015 (1,2,3,4) - same as before (about 1.7x would be fine imo)
02:57:853 (1,2,3) - starting from triple right after break is not nice, turn it into 1/4 slider with reverse?
03:14:597 (7) - start and end are not parallel? if it's on target then okay
03:18:783 (1,2,3,4) - same as before orz
Normal
00:36:225 (2,3) - add soft whistles? you put notes on red ticks and better to add hitsounds to make them more clear to hear
00:39:946 (2,3) - same pattern, same suggestion
00:51:108 (2,3) - here and next to the end of map
01:09:713 - add note here to keep 1/1 rhythm between objects? (or make 1/2 slider)
02:16:457 - add note here to keep 1/1 rhythm between objects?
03:10:643 (4,5) - all diff before you stacked notes/objects with 1/1 rhythm, here 1/2, can be confusing.