Help with a theme design

Hey There,

I’ve mocked up a design for a website that I hope to create using WordPress. I was hoping to get some advice though.?I have experience skinning themes but I’m struggling to find a theme that would match the design I have made. If you guys could take a look at the pic I have linked and let me know if it would be easier to modify a theme to get the look I am after, or whether it’s quite straight forward to create my own theme?

Any help would be much appreciated! Many thanks ??

My design – https://i44.tinypic.com/4zysfq.jpg