Full Form:

• Place the nondominant hand in neutral space, open with the palm facing up
• Place the dominant hand in a "claw" handshape with the palm facing down
• Bring the "claw" to the palm of the nondominant hand
• Lift the claw up, indicating the height of the cake

*Simplified Form:

• Place the nondominant hand in neutral space, opem with the palm facing up
• Pleace the dominant hand in a "C" handshape (if this handshape is too difficult, you may use a flat hand), palm in facing down
• Bring the hand to the palm of the nondominant hand so they are touching
• Lift the top hand up and off of the bottom hand

*shown in video