On the side of the shower opening that will support the door, hold a jamb piece against the wall so that its lower end fits into the base track. Without moving the track, use a 4-foot level to adjust the jamb until it's plumb. Stick a pencil through the jamb's screw holes to mark the wall.
I was asked to answer, so I'll give this my best shot, please know that I do not have any specialized or trained medical knowledge, only practical experience from Ashtanga yoga and meditation. So, yes, walking does reduce anxiety. 1.
Anxiety can affect the face in a variety of different ways. There is no specific strategy for overcoming face symptoms altogether. Slowing your breathing may help with facial tingling, and walking around can improve blood flow to reduce flushing, but overall each face symptom is simply the result of your anxious state.