OSC customization

Visit: [login to view URL] I installed a OSC here by Cpanel. I need some customization. First of all ...... I want to change its template(design). I have design ready. Second, I want the products to be listed on the home page. and when i add a product.........its image gets so much shrinked that no one can understand whats the product is(its a jewellery site so perfect image pic is an important thing.) I`ll have lots of OSC wrok in future .......so give me best deal and become my permanent OSC guy. I need it ASAP and at lowest possible price!! Thanks