Uncrossing a space.

Visit the space you wish to uncross; if legally you can be there. Take some consecration oil on your index finger. Begin by making the sign of the cross. Only, start with your left shoulder, then your right, forehead and, chest. This represents the initial crossing of the space. Next start with your right shoulder, then your left, your forehead and, chest. This signifies your  uncrossing of the space. 

Next, safely light a bit of your mugwort. Make sure nothing in the area can catch fire. Smudge the air with the mugwort smoke, and continue to light it as needed. 

Lastly, toss some of the holy water about the area. This should be done gently yet reverently.