How to exploit the advantage of a bishop over a knight? Occasionally in a tournament game I will find myself with a material imbalance of BvN or BBvBN in a situation where I know the extra bishop should be superior (center cleared of pawns, pawns on both sides of the board, etc). 

However, I don't think that I'm very good at turning this advantage into any other advantage before my opponent manages to swap their knight off for my bishop. What are some guidelines for playing in this situation, or top player games that give a clear demonstration of possible plans?
Usually you want to open the center up for the bishops so that you can attack on both sides of the board.  Or you can try to exchange bishop for knight in order to obtain a more permanent pawn structure weakness like doubled pawns or isolated pawns to attack later in the game.