Keep your rear elbow tight to the body without touching it. It will protect your solar plexus and ribs.
[header] How to perform a flying side kick [title] Keep your guard up. [step] In order to execute a flying sidekick, you need to learn to protect yourself from your opponent's attacks while you wait for an opportunity to use it. [substeps] Raise both fists to just below eye level to place them in position to both block strikes as well as to execute offensive movements.