Customize Wordpress Theme

Hi I am looking for someone to customize the default wordpress theme. Wordpress is already installed. I just need someone to customize the css/php files. This should be a simple, straightforward project. The exact layout is used on another site that I will send to the winner. My site that sells a product via affiliate links. A general idea of what needs to be done is below: 1. My top 12 products posted (4x3) on the homepage with links to a page to purchase 2. A custom "Purchase Now" button that links to external purchase site using a php redirect to hide affiliate link 3. A "You May Also Like" widget in the right margin located on the product pages Again I will send the winner a link to the wordpress site I would like my site to copy. The same wordpress theme is already loaded onto my site along with my products and descriptions. All I need is a simple redesign of the site using the css and/or php files and a custom purchase now button that will link to any external site using a php redirect.