Overall:
Offset +5ms (500)
Storyboard images are too large. Try to get them below 800x600. Many of the images are 248x1238. Also, many of the images contain an excessive number of transparent pixels. For example, totuzen:
Only the area in the red (or is that green? I can't tell...) box is needed, the rest of the image in the white box should be cropped out.
You can scale them to be larger by using the storyboard editor or script. Also, I'm not quite sure why all your storyboarding is set to difficulty specific and copied into each difficulty. You can just stick everything in the .osb file to save time. The only difficulty specific thing would be the "Beatmap by Incredibeast" thing. It's fine as it is though, you don't have to change it.
Add a cursortrail.png. Copy the one from the default skin if you want.
Move the first kiai start timing section to 62,375 in all difficulties. It should be exactly on the large white tick on the timeline.
Move the second kiai start timing section to 77,375 in all difficulties.
Preview point at 01:01:666 sounds better.
Shulin:
Fine
Sakura:
Increase overall difficulty by 2 ticks. This will make the map EASIER to play.
00:17:370 (1,2,3,4,5) - this is really confusing. Place these notes further down so they don't appear under the slider
00:41:041 (6) - end this slider at 00:41:510 instead
Chipped:
00:01:666 (1,2) - I don't like how the map starts. I pretty much have to guess at when to click these notes. I suggest putting the first note at 00:02:370 instead. Also, having these notes here is preventing the countdown from showing. It will show up correctly if you get rid of everything before 00:02:370
00:22:291 (5) - fix spacing
00:24:870 - map something here
Nini:
Fine. There are a bunch of unnecessary green timing sections, but it doesn't make any difference if you remove them or not.
Offset +5ms (500)
Storyboard images are too large. Try to get them below 800x600. Many of the images are 248x1238. Also, many of the images contain an excessive number of transparent pixels. For example, totuzen:
Only the area in the red (or is that green? I can't tell...) box is needed, the rest of the image in the white box should be cropped out.
You can scale them to be larger by using the storyboard editor or script. Also, I'm not quite sure why all your storyboarding is set to difficulty specific and copied into each difficulty. You can just stick everything in the .osb file to save time. The only difficulty specific thing would be the "Beatmap by Incredibeast" thing. It's fine as it is though, you don't have to change it.
Add a cursortrail.png. Copy the one from the default skin if you want.
Move the first kiai start timing section to 62,375 in all difficulties. It should be exactly on the large white tick on the timeline.
Move the second kiai start timing section to 77,375 in all difficulties.
Preview point at 01:01:666 sounds better.
Shulin:
Fine
Sakura:
Increase overall difficulty by 2 ticks. This will make the map EASIER to play.
00:17:370 (1,2,3,4,5) - this is really confusing. Place these notes further down so they don't appear under the slider
00:41:041 (6) - end this slider at 00:41:510 instead
Chipped:
00:01:666 (1,2) - I don't like how the map starts. I pretty much have to guess at when to click these notes. I suggest putting the first note at 00:02:370 instead. Also, having these notes here is preventing the countdown from showing. It will show up correctly if you get rid of everything before 00:02:370
00:22:291 (5) - fix spacing
00:24:870 - map something here
Nini:
Fine. There are a bunch of unnecessary green timing sections, but it doesn't make any difference if you remove them or not.