A Question of Copyright

Hi all -- I'm posting again. I've just written to see if I can get permission to use my back tattoo as the inspiration for a quilt block. It's an interesting question and I've spent the past couple of hours reading about copyright of tattoos on the web. A lot of food for thought. Here's a photo of it, as an FYI -- since unless I'm wearing a "wife-beater" t-shirt, you'll never see it! Unfortunately, the shading color kind of photographed funny -- it's not purple at all, more of a darker red. The quilt block I'm thinking of would eliminate the halo and a lot of the shading, etc., but I'd like a similar shape with the same type of "sharp" wings/feathers.