Background images for iOS app

I need an artist to design background images for an iphone / ipad app I am making ... need images of dragons, in various stages - egg, hatchling, juvenile, adult. 4 stages x 3 dragon types - blue, red, green. These are for a children's(8 - 10) educational app, so they need to be more friendly than scary looking. Images should be 1024 x 768 pixels. I also need an icon 512 x 512 pixels. If I could get one sample or a link to a sample image. May get some follow up images if I am happy with the results.