WARNING: Not a master player.
However, you should not rely on orthodox play too much. Monotony can lead to repetition and prediction, especially when it comes to formation. IMO, you need to have a good balance of deception, namely bluffs and fake flags, perhaps fake blitzes, or maybe the Low Key Gambit and also defense, as flag hunting is very rare, and most action takes place in the field, not behind the scenes, patiently waiting for the flag. People these days are protecting their flag more than ever, so you should try to lure his forces out, to leave his flag vulnerable, making sure to evenly attack all sides. Do remember that pieces can only move one square at a time, and it is easy to lose tempo in a difficult match.
That is all.