Like the others have said, it will get acclimated in time, and begin to see that you are not a threat. Try to imagine the tiny snake's point of view,.......to it, you are a GIANT MONSTER that is going to eat it, that is an extremely useful survival instinct that is "encoded" in many young snakes at birth.
Don't expect things to change overnight, but gradually, you will see things get better, the musking/biting will subside after a while. A bite from such a small snake is hardly noticable really, and afterwards you will laugh it off and think nothing of it, but as some others have mentioned, try NOT to jerk back if it does do this, it can potentially harm the snake much more than it will you. Also, when you go to get it out, don't hesitate and go back and forth in front of the little dude with the before mentioned "Giant Monster Hand", it will view this as more of a threatening gesture. Don't give it time to "zero in" on your hand, but instead just gently and deliberately pick it up at mid-body, this way, it won't have time enough to think about it, and get defensive.
Another good way for some, is to fashion a small snake hook out of wire that is smoothed at the tip, so it doesn't poke the snake, and after lifting the hide box, go down and hook the snake while it's still conveniently coiled up. Slowly lift the snake out, and gently place it in your hand, this way, he didn't "spook" over the sight of the big "Monster" hand, and allows the snake to "see" that things really aren't as bad as he originally thought, and will surely calm down in just a little time. This will give both you, AND the snake confidence at the same time.
best regards, ~Doug

-----
"Better to be silent and thought a fool, than to open mouth and remove any doubt!"