run straight. that is the what great outside centres do. don't crowd your wingers. run at gaps not at players. learn how to draw and pass if you can't already and show that you can put your winger into a gap. best draw and pass training is 2 on 1. do it over and over in the 5m tram tracks.
get a brick wall and maybe paint a target or put something on the wall for a target. (make sure this is outside) Then mark how many metres you are passing from. Keep passing from that spot until you can pass directly into it. then maybe take 3 steps back and try and do the same. Keep doing that until you can do long passes. Also you might need to bulk up a little more. You seem bulky but outside centres need to pretty bulky because you will be going up against some big guys, i ain't winger any more.