ok so i am about to attempt my first thigh injection, i have a lot of experience but my brother and girlfriend always do my shots, so the question i have for you guys is how far should the pin go into my leg? i have 22g inch and a half pins, also if any of you have any pointers please feel free top share. I have been to spotinjections.com already and have been study8ing it like crazy. thanks for the help.