Superb Graphic Designer Wanted

I am seeking a skilled and talented graphic designer who can create the following:

Logos
Wordpress banners
Product images (images of CDs, DVDs etc)
Facebook Advert images (banners for advertising on Facebook)

I need someone who can create several items per day while also producing excellent work.

Our clients use basecamp so you will need to have knowledge of this.

There are a lot of tasks and revisions being requested each day, so the ability to manage your time is essential.

You will need to talk to clients politely by email.

We are based in England.

Please provide examples of your work in your application.