First Time Pinning Glutes

I am starting a cycle where I will be pinning EOD. My last cycles I used longer esters allowing for twice weekly so I always just did Delts. Now with an EOD protocol I have to do a minimum of 4 sites to minimize scar tissue.

Any advice on Glute injections?
I have someone who will walk me through the protocol in person but just looking to see what other info is out there.

Look up Ventrogluteal IM Injection.

I never could pin my glutes. Couldnt get the pin pushed down even if I could get the needle in.

I literally only pin in my right glute. Never have pip, always goes in and out smoothly, never bleeds. I also use a 21g 1.5in needle lol