Overall we need 6 total banner ads in 3 general sizes:
1. Leaderboard 728X90
2. Full Banner 468X60
3. Square 250X250
4. Medium Rectangle 300X250
5. Skyscraper 120X600
6. Wide Skyscraper 160X600
We would like a professional feel that matches our website. All already existing graphics can be downloaded from our website: http://www.performable.com.
Please take a look at ALL of our pages to ensure you take full advantage of our already existing assets.
In particular make sure you take a look at our feature tour. It has a lot of good content: http://www.performable.com/overview/
Email me if you need any additional resource or have any questions.
P.S. If you are the winner, there will most likely be additional work for you down the line.
P.P.S. We most likely don't want banner ads with pictures of money or women in them, but it is up to you what you submit!