I'd say by the time you put a top border on your drawing it will be just fine.
I am assuming this will be a sheet cake. If so, what about decorating that as a football field? Green frosting with some white yard lines, then the Steeler (circle) in the center at the 50 yard line.
It will be a 9 inch round. The emblem will be on the bottom and the Terrible Towel will be the topper.
To clarify, the emblem will be on the side of the cake.
No, put the towel on top - stand it up using sucker sticks OR toothpicks that stick into the cake.
A[IMG ALT="My son bumped into the cake on the left side near the emblem and the fringe on the terrible towel broke on the right side. My husband still loved it despite the flaws."]http://cakecentral.com/content/type/61/id/3095532/width/200/height/400[/IMG]
The fringe on the towel broke off and my son bumped into the left side of the cake but overall I am pretty happy with the outcome. Thanks for all the suggestions!