Go the galleries and under search put skateboard-there are 2 there! I did one but haven't uploaded the picture yet-I did a 9x13 and sort of trimmed one end-used cupcakes connected with a straw underneath for the wheels and set it on a brick underneath the board-couldn't see it but wanted the wheels to be there-had an old skateboarder topper to put on top-you could even do an edible image or BCT of some of the top skateboarders logos etc.
What you do may be a "little thing" but "little things" add to alot!
I would have to crave one out~ perhaps with it on its side so that the wheels arent on top....but hey I love all the ones I have seen on here and the internet..... I am sure you will be great once you do it~!