Developer needed for a simple Website speed optimization

Hi everyone, I manage a simple dress up games website which I test on various tool like Yslow, Google page speed and other speed tools. I need an experienced php/html/css developer that can modify the website to make it load as fastest possible. I already modified several things like Gzip and such. Things needed to be done- 1. Combine images into CSS sprites 2. Leverage browser caching 3. Make fewer HTTP requests 4. Add Expires headers It's a simple task if you know how to do it. Message me for website address+further details. Regards,