Dear Sirs,
I am a Wodpress developer and I am interested in your advertisement. As you need a coder, I need a designer. I have my onw projects and clients which needs a design. There are a lot of project in freelancer.com where design is needed, so I can't bid on them. I think this will be a win-win situation - you will make the design, I will do the code part. I can code your next project, so you can be sure in my skills.
Looking forward to hearing from you.
Faithfully yours,
bluesummer