Also, if you want to have this included in the weekly challenge, you should check the box that says to do that on the page where you can edit what you have submitted.

Sorry about that! And sorry I couldn't fix it sooner, was having some internet problems, but here is the right image :)

See the noobtorial thread in the forum to see where and how to upload your art. Scroll down to the 'pixel art details' pic. Basically, ou need 2 ieces 1 100x100 or less for the small preview file and a 2nd image that's the whole thing.