The first step is to use a scraper to carefully put the wall cloth over the convex corners, but do not stick to the other wall.
Step 2: Make a crease from the upper corner of the raised wall by hand. From the convex wall, draw a vertical line from the ceiling to the floor. 12.5px.
Step 3: Use a utility knife to cut the wall cloth along the vertical line and guide it with a ruler.
Step 4: Carefully open the remaining wall covering and leave it on the bench for later use.
Step 5: Use the seam pressure roller to flatten the wall of the overhang and add the glue on the covered wall cloth.
Step 6: Put the wall covering on the cover up and put together a good pattern. Scrape the wall cloth with a scraper and flatten it with a roller.