I use 1.5" 25g in quads, alternating. I learned lots from YouTube videos. I checked out a few before trying it.
What I do:
Swab vial
Open syringe from wrapper and pull gear w/ 23g
Pull back a bit to get some air / gear fully in there.
Swap needles for a new one (25g) that I'll pin with
Swab vial again with alcohol swab #1 and put it away
Turn syringe upright and push plunger to get as much air out as possible (without wasting gear)
Swab injection site with new alcohol swab
Pin
Aspirate and watch for bubbles
Push, wait for eternity... and listen to a trance mix to not get bored while injecting
Withdraw needle
Swab site down with alcohol swab #2
Continue listening to trance mix and check morning emails
I'm going to incorporate delts and glutes into the rotation just to avoid scar tissue build up. First cycle, but I figure it's better to rotate early on.
(PS your jacked Yoda just looks....weird. Yoda's whole angle is the soft old small & wise badass

)