Draw a defender onto you first, then pass. Releasing the ball too early in an overload just hands the problem on — the defence never had to open up.
Three against two is not an overload as long as no defender had to react. That is where most amateur counter-attacks die: the ball carrier releases it far too early, the back line holds its shape and simply shuffles across — and the three-on-two turns into pointless sideways passing. Committing a defender means driving at him with pace, keeping the ball ready in front of your foot and your head up. Sooner or later he has to step out. The pass goes exactly at that moment of engagement, because that is when the space behind him opens. There is a limit to the rule: committing is not a licence to dribble. If the line stays compact and nobody steps out, you will dribble yourself into a dead end — then switch quickly to the far side, where all that shuffling has left gaps.