hes getting worse, not better?

[Bartman]

I dont get it. Ive been going with the "handle everyday" route for my savannah monitor, and today he bit me. He even hissed a little.

What I do is take him out probably every 3 or 4 days, and take him to the washroom where I know if he runs out of my hand he cant go anywhere but around the floor. So sometimes he just walks around and when I move he jets away. I would usually hold him with my finger in between his left arm inbetween my index and middle finger with my thumb over top his body..and same thing with his legs but with my other hand.

When I would rest his head on my leg he stops moving..but then when I lift him he get really alert and starts squirming. I try not to make it like im holding him to tight and make him scared or something so i let him walk out of my hand and run into a corner or something. Then today I went to get him like usuall from the corner and he bit my thumb. Not a bad bite, drew some blood but I put some polysporin just incase.

What am I doing right or wrong and is he done for, temperment wise. Like will he never be tame now..hes about a foot and a half id say and is growing quickly...i need him to be calm, well i WANT him to be calm before he gets to big. Now i know what i was in for when i bought him so its not the worst thing in the world if he/she has an attitude, but obviously id rather him not. At least so i can take him out without being petrified.

Thanks!