Worst for pain for me was across the back to the shoulders. Coloring was really deep and solid and hurt bad when they were filling in the color over my spine. Rest wasn't bad. Might have been that I sat for over 3 hours while they finished it.

For bleeding, worst was inside of my upper arm but that didn't hurt much at all. Like a tack being dragged across the skin.

As others have said though, a lot will depend on the artist and how you cope with pain.

Good luck, and you know we need pictures when it's done.