I did too, and it lasted about 2 months or so.
I put two symmetrical tattoos on my upper arms/biceps, and was fine for the first few days.
I thought the tattoos were high enough, but when I put on a short sleeve shirt I saw the bows were pretty visible; and if I reached the entire bunnies would be shown.
Once I got used to them, though, my panic calmed down and I was fine.
It's a good concept... involve him in the conversation, he's doing the piece and he did the wolf for you... I wouldn't limit him by showing only one design you like, but tell him which you like best... next to the others... you'll get a better, more original piece that way.