Poster-Designer

The deliverable are highquality poster-designs, i'll give you some basic information on what the design should be about and your job is to create a poster-design.
The design will always include some text and some kind of picture/drawing in the background.

I'm looking for someone who is very creative, and doesn't need to much guidance.

The reason why i'm looking for someone to do this for me is because i'm just not really creative and i'm also not an expert in design.