Do not touch the water in the bowl, as it is being filled with the negative forces you are eliminating. Wash the bowl thoroughly with cold water, scrubbing with some of the consecrated Salt. You may make two Stars at each opening if you wish - one on the sill or threshold, and the other on the door or window itself. The methods that I use involve putting oneself in the center of the Three Realms, constructed as a triskele. It involves both movement and a breathing pattern used to time the movement.
Breathing is, ideally, timed to the heartbeat.
Three each beat is one count. Breathing pattern is to inhale for 3, hold for 1, exhale for 3, hold for 1. Movement is slow, rhythmic and deliberate. Each movement has its own meaning. Start standing erect, arms relaxed at your sides.