Im not a boxer so i wont go into much detail (ill save that for more knowledgeable people), but you will probably need to work on your footwork and head movement. Practicing on a slip bag (maize bag)should help with the head movement.

Slip bag is shown here (at 50 seconds) in case you arent familiar with it:
http://www.youtube.com/watch?v=UjF2IHw0EyE

Like i said, im not a boxer, so im sure others will have more info.