Create Cartoonish Website Banner/Logo for Chilidog Site

I'm looking for a cartoonish (as opposed to photographic) logo/banner for the top of my website. The site is called chilidogblog.com. It will be about chilidogs (big surprise, huh?). The banner should EXACTLY 950px wide and about 250px high. It should load very fast. Deliverables include the final image in the appropriate format for the web (GIF or PNG preferred), plus the original source files (photoshop, etc). Attached are the site's planned color palette and a design that I was kicking around that shows sort of what I'm thinking of (though it is made from low quality non-original artwork found on the web). THE NEW DESIGN MUST BE ORIGINAL ART. Please include pointers to examples of similar work you've done with your bid.