The opponent should pay attention to the observation in the process of punching and remind him in time if the action is wrong. For example, the fist is pre-stretched, the hand is not well protected when falling, the steps are not kept up, and the body leans forward. These should be avoided as much as possible.
If you find that your opponent's defense is not good or your punch is slow after punching, hit him where his defense is not good and let him notice his mistake.
Boxing target practice is to improve the accuracy of punching, standardize the action, practice the opponent's reaction ability (require the opponent to punch immediately after lifting the target), and test the opponent's control of distance. Two people must stay where they are, but the last step can reach the distance. When they see each other getting too close, hit him a few times to get his attention.