I think you are my new hero. I'm an artist and DIY fanatic and have been trying to figure out how to put my Skelekitty character with crossbones on my roundels.
Now for the evil question - do you think it would be "safe" to do on the steering wheel roundel?
Update! My husband found the answer. Short version: no, but there is a workaround.
http://www.m3post.com/forums/showthread.php?t=299197