The Hat looks good. You should put an edge around the coin so it gives it the look of a real coin. Did you illustrate this by hand or this a modified image from one of the proprietary software programs?
Is there any news on who won the logo contest yet? There is some interesting work in that regard. I think any copyrighted material used, unless it is illustrated by hand should probably not be used for long term adaption or ever in any type of competition.