Stuff to know:
-Icons need to be square and at least 100x100 px.
-Banners need to be 800x100 px or a size that scales down to that.
-Backgrounds need to be at least 1280px wide.
-Mind the spot title, which will cover up whatever's in the right bottom corner of your banner.

This will be open until Friday, November 8th, but if anyone needs more time, just let me know!