if you take your index finger and thumb and make a V with them, put your thumb on your Illiac crest or most prominant part of your hip bone,put your index finger on the head of your femur, rotate your hand down and the area on your glute that you are outlining is the area with least nerves and vessels and there should be no major nerves there. use an 18G to draw your gear with and a 23 or 25G to shoot.