Start: Load the barbell with more weight than you would for the more traditional shoulder presses, and rest it on the fronts of your shoulder-through it will be the backs of your hands, not the bar itself, that actually touch your anterior deltoids. Keep your arms close to your body.
Finish: Bend your knees and lower yourself to the half-squat position, then immediately drive yourself u with your legs as you thrust the weight toward the ceiling until you are up on your toes and your arms are straightened above you. Slowly return to the starting position.
Same as above, but step forward with one foot as you push the weight overhead. Step back, then lower the weight. Alternate feet either with each rep or with each set.