Artistic control?

I also have no talent when it comes to drawing, I can see it in my head, but when I try to put it on paper, it just kinda looks like a scibble. I'm lucky in that my artist can take my somewhat vauge requests and a few pictures which look nothing like what I want and draw exactly what I want. (Some times a few changes are needed, but not often) He's an amazing artist, and I trust his judgement. He only does custom work, the only flash in the shop is for ideas, you can't find it on the wall and have it tattooed on you.