This image is the sketch I did for Gamecock Stop in Columbia, SC. The owner approached me with the concept of a shirt that would allow him to place a picture of his customer's face and put it on the image of a football player imitating the Heisman pose in a USC Gamecock uniform. I used a few reference photos of different players but none of them were in this particular pose. There are a few differences between this image and the one below namely, the proportion of the outstretched hand/arm and the foot in the foreground.
Here is the finished piece as a vector art image. I used Adobe Illustrator CS2 to keep all colored objects editable.