I'm so honored when people ask to permission to have my art tattooed. A reputable tattoo artist will require that you have a signed release from an artist in order to use their art as a basis for your tattoo. I offer these signed releases for immediate download at a very low price.
Please consider purchasing a print of your tattoo from me. It's a small compensation to me for the rights to use my art, and it gives you high quality print of the art you wish to use. (Images of my art found on the internet are low-resolution and not a good basis for a quality tattoo)