Bahahahaha. It looks so big and juicy, how can a needle NOT like being in there. I think many of us have made that mistake LOL.
Tips for quad injects:
1. Measure one hand width down from your hip and one hand width up from your knee.
2. Pull the skin towards the center of your leg (Z-track method) and do not release it until you pull the needle out.
3. Make sure you are injecting in the upper-outside part of the quad. Don't hit the top (nerves) or directly into the side (iliotibial band).
4. Leave the pin in for a few seconds after you've injected all the oil.
5. Pull the pin out and release the skin you've been holding.
6. Apply pressure for 15-30 seconds. DO NOT RUB.
It might help to take a nice hot shower beforehand to relax the muscle. DO NOT flex (I'm sure you knew this) as that's going to make your leg really cranky with a piece of steel in it. You can take an ibuprofen afterwards to help minimize swelling, but it's not necessary. I also wouldn't do it on leg day.
My .02c