Make sure your stance is low.
Ensure your toes are together. Be careful not to let one toe separate from the others; to prevent a broken toe. This move, lifting the leg, is the most important of any to make the kick powerful. Practice, to make sure it is fast. To refine the leg life, you can imagine you will be striking someone with your knee. The lift of the leg should be that strong and fast.
Exhale and/or kiai on impact for maximum force. A lot of people aim for the groin with this type of kick. [7] X Expert Source Yvonne MoFitness and Health Coach & Kung Fu Instructor Expert Interview. 10 September 2021.
Snap back needs to be all the way back to the position in Step 2. Do not drop your foot straight down. Control your leg all the way back. The impact/snap back can be a bit tricky to get if you are kicking the air. Some of your practice should involve kicking a makiwara or other target so you can get the feeling of impact/snap back. Snap back is important for several reasons. It makes the kick more effective, prepares you for the next technique, and ensures your opponent does not grab your leg.