Happy Birthday!
[General]
i dont seen line.png used anywhere in the sb, maybe remove it?
[Normal]
Since this is the lowest difficulty for the set, try AR4 instead to make it easier to follow for newbies
00:57:627 (1) - whistle end? also normal sample on 00:58:827 (2)
01:28:027 (1) - this spinner has a note following too soon after it, i suggest you shorten it to 01:29:627 and add a note at 01:31:227 instead
01:47:227 (1,2,3) - would be cool symmetry if you could center this
02:25:627 (1,2,1,2) - same as 00:57:627 (1,2)
02:32:027 (1) - same as 01:28:027 (1)
02:48:027 (1,2,3,4) - try forming it like this:
02:57:627 (1) - same as 01:28:027 (1)
03:07:627 (2) - whistle end?
[Hard]
01:33:427 (2,3,4,1) - try forming a triangle pattern here, would look better
01:44:627 (3) - i would shorten this to 01:45:027 and add a note at 01:45:227, matches the music better
02:45:227 (2,3,4,5) - for some reason i found this back and forth pattern a but difficult to read (since the manual stack overlaps the slider body), you can try placing 02:45:827 (4) on 02:46:427 (1)
02:52:227 (3,4) - because of stack leniency this pattern doesn't look good under 02:51:227 (1), i would move it to x:172 y:160
03:15:227 (4) - do a NC here to make the 3/4 to 1/2 transition easier to read
[Insane]
For a song at this bpm i recommend using OD7 or 7.5, currently the long streams are accuracy killer since low bpm streams are harder to keep consistency
01:30:427 (1,2,3,4) - because of the way the music builds up here, i would give these more spacing, preferably not overlapping to also make them easier to follow:
02:40:027 (1) - whistle start?
02:47:427 (4,5) - this could throw off players since it plays very differently from 02:21:827 (4,5) which covers a similar rhythm. Having the two use the same rhythm would be much better
02:56:027 (1) - whistle start
02:58:427 (9) - forgot NC
03:13:527 (5,1) - was this offset intentional? plays a bit weird...
Thats about all, let me know afterwards
EDIT: oh snap i didnt see Scorpiour's bubble, i guess i can just rank it afterwards