Here is gif of my favorite front shoulder workout my brother Andrey introduced me to it quite a while ago.

Get a elastic band and find a stationary object (I used the metal part of the squat rack)

then hold both in your hand make sure they are both same length on both sides and lean in a bit putting one leg forward and make sure you are looking up and forward not down and extend your hands forward feel the the contractions then let go and do it again. Do as many reps you can do but make sure you do the same amount in every set so you can get those muscles to rip.