Hi again! I finally finished my initial logo for your review. I implemented a diamond, as requested, and just tried to keep an overall fun and professional feel to the whole thing. Let me know if you are wanting to include any additional colors besides your orange and green, and I will see what else I can add. Thanks for looking!
Close-up of the diamond icon... This could be used as a bullet or callout throughout the site, as needed. It could also be used to signify the prize or other important things that you want to catch the viewer's eye.
I am still working on some better font options, but here is the current design with reversed colors as requested. I will get everything else uploaded asap!