This is a cool drawing and could be used as a reference for a tattoo drawing, but I can see many places where it would not work for tattooing. This is constructive criticism only and not meant to put you down in any way.

Some of the finer details would either not be realistic to tattoo at a reasonable size, or would blend together as the tattoo ages. The white fringes on the cloak for example, where they go over the black shading, these would merge together and not be visible. You really want to minimize the addition of small white areas surrounded by black when you are designing a tattoo.

If you want I can take this, use it as a reference and redesign it into something that would be tattooable?