00:29:361 (2) - This note could be shifted to 00:29:472 (2) to match 00:31:250 (11,12). You could also add an extra don at 00:29:806 (4).
01:23:806 (9,10,1,2,3,4) - too hard for a oni, you used 1/4, mixed with 1/6 and used complicated colour changes. I suggest changing to kkkkd.
03:58:694 (15,16,17,18,19,20,21,22,23) - too hard for oni and it doesn't even follow the music correctly