Defy basic rule at the start of the game
- We been told as white we do not want to lose our castling right at the beginning of the game.

- But now i think my position becomes better after this exchange. Later on, the opponent will check the king and we block it using our knight.

- This lead to great wall of defense in the future. Why do u let yourself doubling your pawn structure? And this is why.

By having this kind of pawn structure will lead u in controlling the middle of the board and let your king to be ready for the end game and have the protection at the same time. The bishop also control wide areas and if there is exchange between BxB, you will gain advantage by again forwarding your king to be ready for the end game.
What to do next:
- Control open file.
- King marching ahead.
- When controlling middle board, opponent knight is having hard time as the only way to move is at the side.
Please try it and let me know if there is any more tips when you using this 'opening'