Hey! I'm really glad you like this design, but as it is for a specific commissioner, I ask that you please refrain from using it. If you like, I am open for tattoo design commissions and could design a similar one for your specific use (: I also have designs in my gallery that are free to use.
Oooh, I really like it! Not only the black/grey colors, but also the details and how the motive just flows! It reminds me a bit of my deer tattoo (or at least what I tried to achieve..) with the lines at the bottom of the pic...but this here looks so much better then my failed attempt >.< Good job as always! :3