It goes without saying, making a correct, basic fist is pretty important. It can mean the difference between your broken hand or your opponent’s broken nose. Happily, making a fist is quite simple to do.
First: Start with an open hand
Second: Close the fingers
Third: Wrap the thumb
Fourth: Flatten the wrist
Fifth: Be sure NOT to bend the wrist – this can damage or even break it on contact. It must be flat! And DO NOT tuck the thumb under the fingers! That is a recipe for a damaged thumb. There is no better way to ensure a proper fist than to perform push-ups on your fists. Those push-ups will also help increase punching power!