You have to lean back and try to jump behind the board so you push it a little away. I learned it like this

aso you go down and are about to pop you should have your body weight centered and not lean forward or backward

Lean back a little

Lean back

Lean back and keep you shoulder square most people tend to lean forward or face front cause your body Naturally want to keep your body balance or you may be jumping to far forward in that case just lesson your forward motion when jumping