This is the second of three steps toward doing a backflip.
The Miller Flip is very similar to step 1 (Turtle Flip) but only one hand is used to touch the ramp.
This allows you to go a but higher up the ramp and get a bit further away from the ramp without fully committing to flipping over your back.
Flip progressions Step 1 – Turtle Flip
Flip progressions Step 2 – Miller Flip
Flip progressions Step 3 – Custard Chucker