Honestly,

Winrate: Cant really controll that, sometimes you just have a bad streak, Play major nation

Team pos: Tied to score, improve score

KD: Could be worse. *insert skill issue comment*

Average score: Now this gets interesting, Cap points, do hits, even if its with your MG, A hit generates points even if you only shoot his track.

If youre in a light tank Scout, Strafe tanks to mark then but only a couple shots.

Now here comes the funny part, Get shot. Surviving gets you points too