[General]
Add a spinner approach circle.
Spinner circle needs to be 666x666, not 767x767
[Easy]
Wow, that SV is pretty high.
Raise HP drain by at least 2, AR/OD at least 1. 2 would be better, though.
00:07:016 (1) - End this at 00:07:586 -
00:31:700 (1) - Maybe extend this to 00:34:358 - ?
00:55:624 (3) - Use this:
160,280,55624,2,0,B|128:346|3:301|53:178|124:199,2,239.999980926514
for this:
01:07:586 (3) - Use this:
224,100,67586,2,0,B|88:156|132:372|380:372|424:156|288:100,1,539.999957084657,0|0
for this:
[Normal]
00:25:244 (1,2) - Very slight overlap here
00:31:510 (1) - Extend to 00:34:358 -
00:40:814 (1) - See if you can smooth this slider out like I did in the easy
00:50:307 (3,1) - Slight overlap
00:59:801 (3) - Try to smooth this slider out too
01:07:586 (1) - This flowed better if you placed it on the left side of the screen. It could also look a lot better, if you want to give it a shot. Having it symmetrical is a must: try to compare each side by placing this in the center of the field and use ctrl + h.
01:07:586 (1) - Unsnapped slider end
01:30:940 (5) - This slider doesn't look very good. :<
01:35:877 (1,2,3) - This part would be cooler if you could follow the lyrics better instead of just going with the beat.
01:41:953 (1,2) - Compare this spacing to 01:22:965 (1,2,3) -
01:49:548 (1) - You really should give more recovery time after a spinner for a Normal difficulty.
01:55:813 (3) - I didn't like this much since it's hitting away when there's nothing in the music for it to follow. Might work better like this

01:57:143 (1) - Try smoothing out the curve on this. A trick you can use to help check is to set the circle size to 5 to make sure it is smooth.
01:59:421 (2,3) - It'd be neat if you could have these not overlapping the 01:57:143 (1) - slider too
[Nana's Hard]
00:05:497 (1,3) - This overlap is pretty ugly
00:18:408 (1) - Would work better as three single hits imo
00:19:358 (1) - Probably better to end this at 00:21:827 - and start a note at 00:22:206 -
00:31:510 (1) - Extend this to 00:34:358 -
00:46:256 (6,1) - Overlap
00:52:585 (1) - Extend to 00:52:871 -
00:54:105 (5) - Extend to 00:54:390 -
00:55:624 (3,4) - Not feeling why these are at .5x. Leave them at 1x
00:57:902 (1) - Better as single hits imo
00:59:421 (3,5) - Overlap
01:07:776 (1,2,3,4,5,6,7) - Um, not in a Hard please.
01:10:624 (1) - Start this at 01:10:814 -
01:23:472 (3,1) - Might be a bit tough for a Hard. 01:24:231 (3,1) - felt okay though.
01:38:155 (1) - Better as single hits
[Insane]
Some of the short sliders such as 00:03:978 (1,2) - look kind of bad. Can you go through your map and try to smooth out some of these curves?
00:16:130 (1,2,3,4) - This rhythm doesn't make sense. :/
00:29:611 (5,6,7,8,9,10,11) - ^
00:34:358 - Extend break to here.

00:49:548 (3,4) - Unsnapped slider ends
00:50:687 (5,7) - This overlap is really bad.
00:58:662 (1,4) - These sliders are a little too sharp. Try to smooth them out a little.
01:01:953 (2,4,6) - It'd be neat if you could set this up without these three overlapping each other
01:38:915 (1,4) - Same as earlier
01:43:472 (3,4,5,6) - Doesn't feel like a good spot for anti-jumps
01:57:143 (1) - Have this pointing away from the rest of the stream like 01:57:903 (5,9) - do
[Taiko]
00:46:510 (1,2,3,1,2,3,1,2,3,1,2,3,1) - I was kind of surprised at the rhythm here. Felt a little drab. Not even any finishes mixed in.
01:32:839 - Maybe set this inherited timing section back to the red line so that the speed up is uniform?
01:38:914 (1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,4) - Same as earlier
01:59:421 (1,1) - Maybe K instead of D?
Pretty nice maps for your first set! Mostly just needs work on the presentation.