Designer for children Iphone/Ipad application

We are developing a children application and would need a designer to assist us with graphic design. The drawing style has to be colorful and vibrant to appeal to young children. The drawings have to be original and we would like to have the exclusive rights to the images. There will be a total of 20 simple icons to be drawn. Upon selection, we would like to have the completed images within 2 days. Please submit a sample of your work.