Yes, you are free to get this design tattooed if you would like to, but please, do not use it for anything else, it's free but for personal use only, your are not allowed to copy or redistribute this design anywhere else without my permission. If you would like to get this tattooed, please let me know, I would really like to see a photo of the finished product. Thank you.[Edit2]
I'm working on a higher resolution picture of this design right now so it will soon be available as print. I will post the final product when it's done.