Here's a PRO TIP.
most trainers train there front delts cnstantly...even when they think they are training side delts. Because they roll their shoulder joint to the best mechanical position. .so they can handle more weight.
Look at your shoulder..where is the lateral head ? Draw a mental arc in your mind of the line the weight should follow to hit those fibers the most effective . Its going to be different for everybody depending on you shoulder girdle....and its not straight out to the side.
Another misconception is stop at your eyes....don't go too high. Wrong...go as high as you can...you're actually isolating the delt more the higher you go.
The one thing I do differently than anyone is I think for myself and have no "sacred cows" when it comes to training.
"You gotta do XXXX !!"
I ain't gotta do shit. Learn your body and experiment
Good advice, but be careful when taking the arms higher than parallel....that REALLY puts the shoulder joint in a precarious position. Better to limit yourself to a little bit above parallel, and live to lift another day.
My suggestion? Partials.... when you cant complete a full rep with good form anymore, don't loosen up the form. Instead, keep form strict and just keep your arms moving, even if it's 25-50% of the ROM. It will BURN, but just push through as much as you can