In Need of a Perfect, User Friendly Design to my Script and Some PHP codding (not much, simple)

Hi there, We have a themeforest clone script, codded in php. For those who are not familier with the system, its simply a martketplace like ebay, used to sell & buy web scripts, css, html5 themes, psd files, themes for cms, etc. [login to view URL] [login to view URL] are example sites, we have the script ready exactly like themeforest, both with function and theme. We ask a pro designer to design a unique, user friendly design to it. We can provide example looks and framework if asked. We can also provide selected colors, etc. We want a clear, perfect design. Sample design: (its a joomla theme, just for sample, would need a lot of costumazation, just for the idea) [login to view URL] Sample framework: [login to view URL] For the coding part, the script we have only supports theme uploads to be sold and purchased, we want it to make it possible to sell php scripts, zip downloads, images, html files, php files. This is simple php code adding to already a perfect working script. Thanks in advance. Those who bid, please provide some nasty designs you have made.