Put your fingers under the lace so that you can see where the hairline starts. I don't suggest cutting it while its on your head as you can run the risk of cutting your own hair. Starting at the end (ear area) cut right along the hair line. It's OKAY if you cut some of the hair off. Keep cutting along until you get to the other side. Comb your wig to get the loose pieces of hair off and it's ready to wear!