Since your Tattoo Shop does not have a copy of the specific tattoo you want I think you will be able to find a copy on the
Internet.

I entered the words tattoo art in my Google search bar, and
was very surprised to find the number of Websites, which
offer Free Tattoo Graphics. If, I were doing the kind of search
you will be doing, I would begin with the ads you will find on
the right of the page. Most of the sites offer free graphics, and
you will be able to download, and make a copy of what you
want to use. Some of the sites ask you register, I would only
register on a free site.

Good luck in your search for your special tattoo graphic!