161800 Header Graphic / Logo

I need a header graphic 780x180 for a website refresh. The design needs to be very professional and clean looking. I am looking for a high impact design since the website is somewhat of a "hard sell". This new graphic will replace an existing one that blends with the current HTML, so you will need to work within an existing base layer which I have attached. In order to be considered for this project, you will need to provide samples of prior work.