00:19:353 (4,5,6) - i'd suggest you to delete these notes or you do it in another way since you're mainly focusing on the vocals on the previous section with some additions to the intrumentals, so by following the the claps with active circles create a lack of contrast between sections since you're always clicking non-stop
00:20:291 (7,8,9,10,11,12,1,2,3,4,1,2,3,4,5,6,7,8,9,10) - and 00:30:291 (1,2,3,4,5,1,2,3,4,1,2) - have no rhythm contrast between them, they feel the same even though the 00:30:291 (1,2,3,4,5,1,2,3,4,1,2) - part is more intense than the first one. I'd suggest you to ad some 1/2 sliders to fill the gap on some vocals.
Example: 00:31:541 (3,4) -
01:13:728 (5,6,7,8,9) - This feels disconnected with the song since the long vocal actually starts 01:13:884 - and not on 01:13:728 - , i'd suggest to add a note at 01:13:728 - than move the entire the rhythm grouping to the red tick at 01:13:884 - than change the 6 to a 1/2 slider and after that finish with a circle
01:22:791 (6,7,8) - I think changing this to two 1/2 reverse sliders with a note between them will proper follow the "miku miku" lyrics there and giving it more contrast to the piano at 01:24:041 (1,2) -
01:26:541 (6,7,8,9,1,2,3,4,5,6) - i think you should kept going with the initial idea you did at 01:25:291 (4,5) - after you stop that and only do 1/1 rhythm gap it feels that it lacks representation and contrast with previous sections, so to not be repetitive with only 1/2 reverse sliders try doing this other rhythm every other downbeat
01:34:666 (2,3,4,5,6,7,8,9,10,1,2,3,4,5,1,2,3,4,1,2,3,4,5,6,7,8,9,10) - the rhythm on this section feels empty for such intense part of the song.
01:34:666 (2,3) - Change these into two 1/2 sliders to fully follow each "miku".
01:36:541 (7) - Add a 1/2 slider here since there's a kick sound at 01:36:541 (7) - filling the gap and proper following the intensity of the song.
01:38:416 (3) - Same here as i stated above.
01:39:666 (1) - Move this to the 01:39:666 (1) - to the kick sound and than you do a 1/1 rhythm gap and add a note at 01:39:822 - for the same reason as before to follow the instrumentals, since this section consist mainly on instrumentals.
01:40:916 (1) - Add a 1/2 slider here since there's a kick sound at 01:41:072 - illing the gap and proper following the intensity of the song.
01:42:166 (4) - Move this to the 01:42:009 - to the kick sound and than you do a 1/1 rhythm gap and add a note at 01:42:322 - for the same reason as before to follow the instrumentals, since this section consist mainly on instrumentals.
02:50:291 - this last chorus is super easy compared to the other choruses even though its the final one? rhythm, density is just so easy compared to like 00:50:291 -, at least when you compare it to chains like 00:52:322 (2,3,4,5,6) -. should buff the final drop imo.