For deer skin wrap handles I do not grind the edge, do an overlap of 1/8" instead. Take a 1 - 1 1/4" wide strip about 20" long and cut about a 3" angle across cut to start the wrap. I like to wrap up from the bottom of the grip counter clockwise looking from the top of the bow. This gives a nice angle at the finger area on the back of the bow and has the overlaps pointing down. Try a dry run but don't cut the top length yet, then apply Barge cement on both handle and leather. Wrap and then trim top end when you get to it. Either tuck the top point under or use a little super glue to keep it down. I use a built up leather arrow rest and cut my wrap to fit flush with the top edge of the rest.
The rolled top (and sometimes bottom) style us usually a one piece lap or stitched handle with the edges folded under to make the extra thickness.