[General]
Source? Tags?
Consider changing the background colour to white or the off-white in the background image.
I would remove the countdown; it doesn't really fit.
You don't have a storyboard, so you can delete the .osb file if you'd like.
Consider adding inherited sections to change hitsound volume, some parts are too quiet.
NOTE: Many of the things below might just be a byproduct of the fact that this isn't the average kind of song to beatmap to. Take things with a grain of salt.
Spinners felt inappropriately placed.
[Easy]
If you keep the countdown, don't make it half-speed here.
00:21:055 (4) - This might sound better 1/2 later.
00:55:076 (1) - Awkward time, maybe shift it 1/2 later, although that'd make it awfully short.
02:20:084 (3,4) - Move these 1/2 earlier?
Felt really empty, although that may just be a byproduct of the song.
[Normal]
00:46:098 (3) - Shorten by a repeat, and add a note on 00:49:032?
01:28:079 (2,3), 01:33:076 (2,3,4) - Sudden increase in spacing? Please fix.
01:55:011 (3,1,2,3,4) - Inconsistent spacing.
02:20:025 (2) - Move this 1/2 back, add a note where it was.
02:30:078 (1) to 02:47:073 (1)- Here, the notes feel counterintuitive. Consider remapping it a different way.
02:58:026 (1) - Random increase in spacing again, although it's a bit more predictable here.
03:05:028 (1,2,3,4,5,1,2,3,4,5) - These didn't really seem to fit.
03:14:063 (1) - Once again, mapping feels a bit weird from here to the end.
[Relaxing!]
This isn't the hardest map around, 8m might be a bit much.
I dislike the small hitcircles.
00:25:093 (2,3) - Line up with 1?
01:27:004 (2,3,4) - Sudden change in spacing here, I recommend not doing this and keeping 1/4s touching.
02:02:012 (1) - The length of this slider felt awkward.
Overall, I felt that Relaxing! felt the best out of all the difficulties in terms of flow.
Have a star.