Sorry for taking so long to get to this.
*Your offset isn't on the
downbeat of the measure, so use 1344 instead.
*Kiai should almost always be on a white tick. You seem to have done this right for the choruses, but the few kiai fountains at the beginning of the song are on blue tick which will look noticeably off when playing.
[Skin]*approachcircle: Why is this 182x182 instead of 128x128?
*If you're going to include an approachcircle and hitcircleoverlay, then you will also need to include a hitcircle (even if it's the default one).
*The sides (top/bottom/left/right) of the cursortrail are a bit chopped off and look strange when the cursor is stationary.
*pause-overlay: Could probably be cropped down to 800x600.
spinner-circle: Sides are chopped off.
*Having the spinner-background be a regular image makes the spinner-metre look strange:
http://puu.sh/PJu*Also the cursor-trail looks strange when spinning.
[Storyboard]*All 800x600 images could be optimized by resizing them to 640x480, but it's not absolutely necessary. (You would need to change all of your 0.8 scales to 1.0, though)
*Not sure why you manually animated your images when you could have done them much easier via scripting:
viewtopic.php?f=20&t=186901:11:755 - sisxsis.jpg fades in too early, thus giving the map a higher SB load and possibly inducing lag. Make sure that this image and the one before it fade in/out at the same time to prevent too many images being on-screen at once.
01:19:031 - erogetutor.jpg does the same thing here
01:22:837 - and kirinoegao.jpg; also, fade this image out instead of just making it disappear. You may have a spinner in each difficulty, but the storyboard will still be seen in ctb/taiko and will look weird.
02:09:628 - expected minamichap1.jpg to fade in when the chorus starts; not 1 1/2 beats beforehand.
02:39:180 - The second break here is a bit boring being just black. :/
03:28:210 - Again, just because an image is behind a spinner doesn't mean you shouldn't fade it in properly. Fade in nekomimi.jpg properly, please.
*The ending could also be faded out better instead of just jumping back to the map's background.(By the way, you can easily remove the map's background from ever showing up while still being shown on the song selection screen. That way, you can fade the maps to black at the end rather than jumping back to the random bg.
The main problem with your storyboard is that images don't fade in/out at the same time, but that can be expected when using the storyboard editor. You could really help yourself by learning how to do storyboard by scripting, and it would make everything look much neater/precise (and possibly ease some lag on the animated backgrounds). Good luck!