Custom header for default vBulletin Travel forum

Hi, I've just set up a travel forum for a Caribbean island using vbulletin Version 4.2.1. I'm using their default theme. Here's a look: [login to view URL] I'd like to customize the header, so that it's a bit more of a creative piece. The Caribbean is tropical, and vibrant, I don't have any specific idea in mind, perhaps an illustrative banner? Here's some inspiration, [login to view URL] - but tropical. Something that will replace the top blue header and incorporates the text "Punta Cana Forums" or simply "Punta Cana" I don't have a large budget to work with, but I'll consider all bids who send a design preview to my inbox. I may also have a second project to offer you with the same work required. Thanks.