Shoulder blades, glutes, and the back of the feet should stay in contact with an imaginary wall throughout the dip of both the push press and push jerk. This allows you to drive the bar with the body (shoulders) as opposed to the wrists should the torso incline forward.
WOD
Shoulder Press
1-1-1-1-1
Push Press
3-3-3-3-3
Push Jerk
5-5-5-5-5
Post load for each exercise to comments.
Push Press: 155 (3)
Push Jerk: 135 (5)
I also did a set of push jerks at 145, but I'm counting them all as failures because they were pretty ugly and didn't feel so hot.
Push Press: 85
Push Jerk: 90
Definitely prefer the Push Jerk. I'm interested to know how high I could get if I was fresh. I think I have another 10 pounds or so in me.