Don't expect this to be any fancy "bespin special review" -- i just had a spare moment and had some thoughts:
*Vertical positioning of rests:
~~ Measure 9 -- Too low. Since there is nothing else on the top staff, position them normally, with the top of the flag touching the 2nd line from the top. See where else this could be applied.
*Select>Ctrl+F is your friend
~~ Measure 24 -- The function above flips the direction of a tie. In this case, because you are cross-staving the melody into the lower staff, it would be preferable to have the tie on beat 2.5 of the accompaniment part to curve downwards.
*Part-time musician, part-time graphic designer, part-time supervillian
~~ Measure 54+ (best part, ohhh!!) -- The sheet in general, but especially this section, is filled with a lot of detail -- which is a good thing! However, as an engraver, try to think of the best way to present those details, in terms of aesthetics, but also in harmony with the natural flow of a musician's mind. The difference between a villain and a super villain is: presentation! To be a more specific, I think you could avoid the staff-crossing, multi-voice clutter by using a different approach to layering. Not that I've actually tried anything, though. I'm just speculating.