Watch out, avalanche of Canadians incoming! JK, well it is our national sport with lacrosse.
Anyways, you really want to work on your legs. Train them the hardest because speed is one of the biggest assets. I would suggest doing some power-skating training/classes. I will let some more qualified Canadians chime in about the position for you since I mostly watch hockey and don't play it (I do rugby and football).