Graphics for a Facebook Contest App

Hi I have developed a Facebook contest app using Shortstack apps. All I have at the moment is text so I need to catchy graphics to go along with it. We are a professional training business so it should look professional - nothing tacky but no ubiquitous images of smiley people shaking hands. The course is about "how to do job interviews" and the graphics should reflect this - 1 or 2 images will suffice I need someone who has done this exact type of work before. The promotion is too win a place on one of our courses and the objective is to increase our fan base. If you have an idea for a really cool graphic such as an animation I will pay a little more if I love it. Please, I need something original. I can go to Google images and get images of people doing interviews myself and add to Photoshop. Include the words "Red Rock" in your reply and I will make sure to look at your portfolio - I just want to make sure you have read the project