You camouflage yourself into the surroundings. Just as you were about to finish, the careers appeared. They looked around but saw no one. They started to argue whether this was a trick, but you flinch, alerting them. Glimmer suggests that the person must be camouflaged, and so they look around wearing their night vision glasses. Unfortunately, Cato spots you and kills you with his sword. Better luck next time, and remember, it's very foolish to light a fire in the Hunger Games arena.