Some of the snakes I have owned in the past were like that after putting them down. I am 6'3" and I think having someone towering over them is a tad bit sttressful to them. Keeping them more on your level in my experience seemed to calm them down a bit. For example they were much more relaxed on a bed with me sitting on it than having the snake on the floor with me standing over the snake.

You still have time to work with the snake and get it use to you, how long have you had her/him?