Mixing up the Sequence of Events During Umrah

Q: Hajj-10: After completing the Tawaaf and Sa'ee of Umrah, is there any harm in shaving the armpits and trimming the moustache before shaving off the hair of the head?

Answer: This is wrong and will necessitate Damm. The hair of the head reeds to be shaved off before any other hair is removed. And Allaah knows rest what is most correct.

Fatawa Rahimiyyah vol.3