I put blue painters tape around the grip, then carefully slice the back and take it off. Lay that onto your piece of leather and cut it out.
Deer hide is very stretchy if that's what you are using. I cut the leather out, then use a hole punch to punch the holes equally on each side. Don't forget to put a mark on the top end of the grip on the inside so you get it back on right. Then I spray 3m adhesive on the leather and put it on the bow, stretching it and aligning it to fit right. I let that setup for about 5 minutes then stitch it up.