When you start to practice handstand, don't practice standard movements at the beginning, because at this time, your arm will not have enough strength to support the weight of your body, and you will sprain your arm. So, you should start with the shoulder-elbow handstand. This action is very simple. Everyone did this in physical education class when you were a student.
Second, kick the wall with your arms around your feet.
After practicing the shoulder-elbow handstand, practice the forearm supporting the ground and stepping on the wall with both feet, so that the arm becomes stronger gradually, and at the same time, get used to the posture of bowing your head.
Third, keep your arms on the ground and your legs straight.
I feel used to having my head down and my arms are strong, so I can straighten my legs, but I still lie on the ground with my arms and my feet next to the wall, so I can share part of my body weight.
Fourth, straighten your legs with your hands.
If you are proficient in the above movements, try to hold your hands on the ground and straighten your legs. At first, you can put your feet against the wall. If you think there is no problem, you can leave your feet off the wall and let the weight of your whole body fall on your hands. In short, it is the principle to practice handstand without injury, and gradually increase the difficulty for yourself until you practice it.