If you haven't fully understood and accomplished the earlier work for the wrists, forearms, shoulders, and upper back, you won't come into proper alignment in the full pose.

If you have scoliosis, practicing a pose as simple as Tadasana (Mountain pose) can help you find a more symmetrical alignment.

You can check your alignment in this pose with your back against a wall. Stand with the backs of your heels, sacrum, and shoulder blades (but not the back of your head) touching the wall.