It's a good idea to play for an advantage on square colors. If the pawn formation around the enemy King has holes or outposts of a certain color you can come up with a plan to capitalize on that.
Often you will come up against a fianchetto defense. If you can you should try to exchange off the defending Bishop. This will leave the King feeling quite uneasy with undefended squares on his front doorstep. If you manage to get rid of that Bishop while retaining your own Bishop on that color, even better.
Any situation where most or all enemy pawns are standing on one color square, it usually means there are weak, undefended squares of the other color where you can post your pieces. Always try to keep your Bishop of the weak complex on and get his Bishop off. If you have a chance to exchange them take it.