Apart from regular training, achieving your first handstand requires quite a bit of flexibility as well, especially for the straight handstand. Here are some great stretches to improve your flexibility for this particular handstand variation.
There are four stretching drills in the video – active dynamic, active static, passive dynamic and passive static. As you might have guessed, I like the one with the gymnast bridge the most.
In fact, I just recently wrote an article at Breaking Muscle on this very move in relation to back and shoulder pain. Check it out here.