I've had a few temperamental snakes and they do tend to go for the face or fingers vs a nice flat arm. I personally think the fluttering of eyelashes and the warm breath is what disturbs them (movement and heat). If your snake is defensive when you try to take it out of the cage, you can always hook it. Most snakes don't see a hook as a threat as readily as a grasping hand. With smaller snakes (under 8 ft) I usually just obscure their view of my hand reaching for them with a piece of cloth, (snake sacks always around) paper towels or newspaper that I use as substrate. Once the snake is out, I keep it away from my face and avoid sudden movements, especially towards the snakes head. I've used thin leather gloves for persistant strikers rather than anything suede or fabric to lessen the risk of teeth getting caught in the glove material. I don't like to use gloves, because once you've got the snake out, you can't get a good grasp on it or feel when it's tensing up. Young snakes tend to be more agressive than adult snakes because they've got the "everything is trying to eat me" syndrome.
Not trying to be bombastic- just some observations...

Lora