Web Design using CSS in existing application

I have an existing application which is basically a turn key ecommerce website. Users of the turnkey system have the option to select TEMPLATES using a back office we provide to them. We need someone to design pro quality templates using our existing system. Our program is adult oriented so the person who accepts this project will need to be ok with adult graphics. Currently our templates are based on CSS files which each control a specific section of the site. Your job would be to design templates using these css files and uploading your own images to be used by the css files. This particular project is for 2 templates so that I can verify your quality of work. If the quality is satisfactory, our initial goal is to build at least 50 templates. However, we will most likely continue to add more templates on an ongoing basis(holiday themes, lifestyle themes, etc etc) The templates should be very professional and modern looking. we insist that the sites will have a very modern and up to date look. So if you are an expert at CSS and are talented with design, we would love to give you a shot. Please provide samples of your design work. If you are not proficient with CSS, please do not bid. Thank you