You're up a piece. Almost all piece trades will make the win easier. If you can get it to a king and pawn endgame where you have a piece and they dont without giving them some huge advanced past pawns or something then the win is trivial.
This position for example would be easily winning for white:
I am terrible at creating an attack from a winning position. Once I get to the point I think now what? Usually the position will just deteriorate from there onwards as I try to figure out what move to do. Take for instance this game, my opponent resigned but i thought it was premature since I had no idea what to do next.