Trade pawns in the center to open up diagonals. The fewer pawns there are in the center, the more scope your bishops will have. Aiming both of your bishops at the opponent's king also increases the chance for tactical and mating combinations. Remember, without pawns in the center, enemy knights won't be able to use a centralized outpost.
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[Event "rated untimed match"]
[Site "?"]
[Date "1969.??.??"]
[Round "?"]
[White "Alexandria"]
[Black "Kristol"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "4rr1k/1ppn2qp/p5pN/6Q1/1PPP1RpP/1P6/8/5R1K w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Nf7+ Rxf7 ( { Black can try: } 1... Kg8 2. Qd5 Nb6 ( { Black can also try: } 2... Re7 3. Nh6+ Kh8 4. Rxf8+ Nxf8 5. Qd8 Re1 6. Rxe1 Qxh6 7. Rf1 Kg8 8. Qxc7 Qxh4+ 9. Kg1 Qh6 10. Qf7+ Kh8 11. Qxf8+ Qxf8 12. Rxf8+ Kg7 13. Rb8 { White wins with a large material advantage. } ) 3. Nh6+ Kh8 4. Rxf8+ Rxf8 5. Rxf8+ Qxf8 6. Qe5+ Qg7 7. Qe8+ Qg8 8. Qxg8# ) 2. Rxf7 Qxd4 3. Re7 Rf8 4. Rxf8+ Nxf8 5. Qe5+ Qxe5 6. Rxe5 { White wins with a large material advantage. } 1-0