Upper Chest Cable Supersets
I've been putting a lot of work on bringing up my upper chest. It helps you look like you lift (even with a shirt on.)
I like to superset Cable Incline Presses with Upper Chest Flys. The Presses should be heavier than the Flys, and then drop down the weight.
With the Flys, think about scooping your chest upwards. Notice my hands, I switch which hand goes above the other and I bring the hands past each other, really squeezing the pecs.