try wearing long sleeves and gloves if you are still nervous.
prehaps with that you'll be able to read your snake without fear.

i just make sure when picking up my snakes to pick them up from behind their head and unless i know that snake really really well, keep my hands mostly to their back and never right in front of their nose unless they cruise around to that point. i also make sure to fully support & keep the snake close to add security.

like the others, once you really get to reading their body you'll know to a degree what's rolling around in that head of theirs.