For skullcrushers make sure you aren't bringing the bar to your forehead when doing them

You want to stretch your arms out and put the weight on your tricep so therefore when your bringing the weight down it should end up just above your head

Most people when doing this they push the bar up as if they were benching the bar and just start going ham on the extension which puts all of the weight on your elbows
Lift it up, dont lock your elbows as soon as you bring it up, bring it to the top of your head

Lift
Dont lock elbows immediately
Shoulders back
Tricep pump
GL

This post was edited by Derm on Dec 19 2015 06:53am