Black - Suggestion
Blue - I highly recommend you to fix it
Red - Unrankable
[General]
Artist could be real singer, not character who sings it in anime, so real artist is: 田村 ゆかり, 金井 美香, 堀江 由衣 (Romanised: Tamura Yukari, Kanai Mika, Horie Yui). Add current "artist" to tags.
Maybe add "hiroyuki maezawa" to tags since it's its composer and arranger.
[Easy]
00:06:036 (2) - Move this slider on 316;304 for better blanket with 00:05:015 (1) and distance consistency between these two sliders.
00:18:036 (2) - Move on 61;67 to follow better 00:17:270 (1) - 's way as you've done with 00:19:823 (4)
00:23:908 (5) - Look on the visual distance between 00:22:632 (3,4) and then between 00:23:142 (4,5) - this looks to be nearer so move (5) a bit down, it can force newbies to click (5) earlier.
00:32:334 (6) - This slider is on the right of 00:31:312 (5) so it breaks its flow a bit, I'd rotate it like about 20° and move it more on top of 00:31:312 (5) to still follow it. If no change, distance between 00:32:334 (6,1) are inconsistent though.
00:35:653 (5) - Rotate about -5°, then move on 128;319 to don't touch and perfect blanket with 00:33:610 (1)
00:40:759 (4) - Move on 384;33 to make better triangle pattern with 00:41:781 (1,2)
00:54:036 (1) - Move this on left a bit to avoid a bit overlap with 00:53:270 (2)
00:55:057 (2) - This slider could follow previous slider's shape. It can confuse player and simply - it looks ugly. Consider pattern like this: http://puu.sh/1PO29
01:03:227 (2) - ^
01:06:291 (1) - Move on 119;152 to be on the same line as 01:07:312 (3) and also make this pattern perfect. Also make then distance between 01:05:015 (4) consistent if you changed this.
01:22:632 (1) - Move this a bit down to avoid overlap with 01:24:674 (3)
[Normal]
00:07:568 (2) - You could move this on 108;228 to make the same visual distance between sliders as 00:05:525 (5,6,1), it's nosense to change visual distance even if it's just visual. Then don't forget to resnap also 00:08:078 (1)
00:15:227 (1) - Move on 282;55 to make triangle pattern and also avoid overlap with 00:13:695 (5)
00:28:504 (1,2) - Avoid overlap
00:44:844 (6,2) - I know this would be hard, but try to avoid this overlap.
00:47:908 (4) - Move a bit up to avoid overlap.
01:06:802 (2,1) - Avoid overlap.
[Hard]
00:09:994 (4) - Move on 318;292 could make better blanket.
00:15:994 (3,4,5) - Hey, look on this one: 00:08:079 (3,4,1). Increase distance between them to make it consistent.
00:57:100 (5,6,7) - I'd follow vocal here it sounds a bit randomly and can confuse player. Consider removing 00:57:611 (7) and moving 00:57:228 (6) on 00:57:355
01:05:271 (5,6) - I feel this rhythm also randomly so consider add repeat on 01:05:271 (5) and move 01:05:654 (6) on 01:05:781, of course remove 01:06:037 (7) then.
01:17:781 (4) - Consider CTRL+J, then moving on 43;283. It feels weird when there are 2 exactly the same rotations in a row.
[Insane]
OD -1 - it's not The Big Black. If followed this, make OD -1 also on Hard.
00:09:610 (2,3) - Probably it's only my personal feel, but I think (3)'s slider body couldn't be completely covered with (2) so consider moving (3) on 78;93 also you'll be consistent with 00:28:759 (2,3)
00:37:695 (1) - Slider's ending point could be visible so move it down or something.
Blue - I highly recommend you to fix it
Red - Unrankable
[General]
Artist could be real singer, not character who sings it in anime, so real artist is: 田村 ゆかり, 金井 美香, 堀江 由衣 (Romanised: Tamura Yukari, Kanai Mika, Horie Yui). Add current "artist" to tags.
Maybe add "hiroyuki maezawa" to tags since it's its composer and arranger.
[Easy]
00:06:036 (2) - Move this slider on 316;304 for better blanket with 00:05:015 (1) and distance consistency between these two sliders.
00:18:036 (2) - Move on 61;67 to follow better 00:17:270 (1) - 's way as you've done with 00:19:823 (4)
00:23:908 (5) - Look on the visual distance between 00:22:632 (3,4) and then between 00:23:142 (4,5) - this looks to be nearer so move (5) a bit down, it can force newbies to click (5) earlier.
00:32:334 (6) - This slider is on the right of 00:31:312 (5) so it breaks its flow a bit, I'd rotate it like about 20° and move it more on top of 00:31:312 (5) to still follow it. If no change, distance between 00:32:334 (6,1) are inconsistent though.
00:35:653 (5) - Rotate about -5°, then move on 128;319 to don't touch and perfect blanket with 00:33:610 (1)
00:40:759 (4) - Move on 384;33 to make better triangle pattern with 00:41:781 (1,2)
00:54:036 (1) - Move this on left a bit to avoid a bit overlap with 00:53:270 (2)
00:55:057 (2) - This slider could follow previous slider's shape. It can confuse player and simply - it looks ugly. Consider pattern like this: http://puu.sh/1PO29
01:03:227 (2) - ^
01:06:291 (1) - Move on 119;152 to be on the same line as 01:07:312 (3) and also make this pattern perfect. Also make then distance between 01:05:015 (4) consistent if you changed this.
01:22:632 (1) - Move this a bit down to avoid overlap with 01:24:674 (3)
[Normal]
00:07:568 (2) - You could move this on 108;228 to make the same visual distance between sliders as 00:05:525 (5,6,1), it's nosense to change visual distance even if it's just visual. Then don't forget to resnap also 00:08:078 (1)
00:15:227 (1) - Move on 282;55 to make triangle pattern and also avoid overlap with 00:13:695 (5)
00:28:504 (1,2) - Avoid overlap
00:44:844 (6,2) - I know this would be hard, but try to avoid this overlap.
00:47:908 (4) - Move a bit up to avoid overlap.
01:06:802 (2,1) - Avoid overlap.
[Hard]
00:09:994 (4) - Move on 318;292 could make better blanket.
00:15:994 (3,4,5) - Hey, look on this one: 00:08:079 (3,4,1). Increase distance between them to make it consistent.
00:57:100 (5,6,7) - I'd follow vocal here it sounds a bit randomly and can confuse player. Consider removing 00:57:611 (7) and moving 00:57:228 (6) on 00:57:355
01:05:271 (5,6) - I feel this rhythm also randomly so consider add repeat on 01:05:271 (5) and move 01:05:654 (6) on 01:05:781, of course remove 01:06:037 (7) then.
01:17:781 (4) - Consider CTRL+J, then moving on 43;283. It feels weird when there are 2 exactly the same rotations in a row.
[Insane]
OD -1 - it's not The Big Black. If followed this, make OD -1 also on Hard.
00:09:610 (2,3) - Probably it's only my personal feel, but I think (3)'s slider body couldn't be completely covered with (2) so consider moving (3) on 78;93 also you'll be consistent with 00:28:759 (2,3)
00:37:695 (1) - Slider's ending point could be visible so move it down or something.