I struggled with this pose myself when I started. There's just so many potentials for misalignment or hurting yourself. A lot of people just do it incorrectly. I found this video to be very helpful in giving you some good alignment tips to make sure that your do this pose with integrity and ease.
This pose as you know has many benefits such as:
1. Strengthens the arms and wrists
2. Increases the flexibility of the spine
3. Stretches the chest, lungs, shoulders and abdomen
4. Opens the heart and lungs
Watch this video and let me know how it goes:
Blessings and Namaste,