Homepage Graphic Design (in Joomla Tempalte)

We are looking for an experienced web/graphic designer to create a new homepage design for an existing website. We are looking for someone with good experience in creating clean highly styled corporate websites. A wireframe of content will be provided to use as a guide of the homepage elements needed. This design will be incorporated into an existing Joomla template and must fit within the existing style and feel of the site. It is NOT a complete re-design of a website/template. You MUST provide samples of your existing work, and experience in html and Joomla will be a distinct advantage – however we are more interested in good design. Initially this is a relatively small job – however we are looking for a long term relationship with further work on other sites.