Steps
Step 1
First I cleaned the wall with sugar soap.
I measured how tall I wanted the arches and set up the laser. I added the painter's tape horizontal line where I wanted the arches to start.

Step 2
I draw the arches using a plate. I marked the middle line with the tape on the plate, so the arches are all the same size.

Step 3
I painted the wall using roller and arches using paint brush. I did two coats.