Hard:
00:08:879 (3) - Make it more unique.
00:11:830 (1,2,3) - You can make these objects go up and edit the slider like this:
00:12:814 (4,5) - Make these sliders more unique.
00:14:781 (6) - Curve it a bit.
00:20:191 (2) - Also curve it.
00:37:158 (1,2) - Make it more unique.
00:44:535 (4,5) - Make it regular notes, not double stacks.
00:51:174 (2,3) - Curve it and space these objects different way.
00:52:404 (4,5) - You could also make it not stacked.
00:52:896 (6,7) - Move it further from each other.
01:00:764 (5,6) - You can make the slider different from the previous one.
01:01:748 (7,8,1,2,3) - Notes spacing.
01:02:732 (3,1) - Make it closer to each other.
01:10:846 (1,2) - Needs different spacing.
01:14:781 (2,3,4) - Make it more unique.
01:19:207 (2,3,4) - Shape is interesting
but you can change the spacing.
01:20:682 (5,1,2,3) - The slider could be more unique, and the triangle seems bad.
01:24:617 (5,1,2,3) - Same here.
01:26:092 (4,1) - Make it a bit closer.
01:31:010 (1,2,3,4,5) - Different spacing, idk how
01:40:355 (5,6,7) - Curve it a bit.
01:47:732 (5,1) - Place it somewhere else.
01:48:715 (3,1) - More distance.
01:50:682 (2,3) - Make them more beauty.
02:02:486 (3) - Curve it.
02:12:322 (1,2,3) - Make it different spaced.
02:18:223 (2,3,4) - Different Spacing, and you can edit the slider.
02:18:715 (4,5) - They are not symmetrical.
02:20:436 (7,8,1,2,3) - Place them different.
02:25:600 (2,3,4) - Needs to be more unique.
02:27:076 (5,6,1,2) - Different spacing.
02:47:732 (2,3,1) - Spacing. And curve the sliders.
02:52:896 (8,1) - Place them closer to each other.
02:56:830 (7,1) - Also needs to be closer.
03:07:404 (3) - Too simple slider.
03:13:305 (3) - Spacing, and also very simple.
03:16:748 (3) - 03:16:748 (3) - Make it a single note.
Nice map, I must say. But it needs to be more original. Good luck m8
Also, Happy Birthday!