Easy: General: Could use some more hitsounds, try playing with some hit-normal patterns or something with some soft whistles
00:08:776 (5,6) - This rhytmn sounds/plays weird. Maybe try something like this (move the spinner up to the white tick too):
00:10:285 (1) - Why not silence this spinner like in [H2O] diff?
[H2O] Beginning feels rather empty, could use some hitsounds. Also, I think the map is a bit overmapped, IMO. Maybe follow the vocals a bit more rather than so much 1/2 spam? Try to use some different rhythms at different parts. Its fine as is right now, but my suggestion would to try to remap some parts with different rhythm and adding some hitsounds
Other diffs look okay though ^^' good luck! Nice song