When you come to an inside corner, you will do some basic arithmetic, allowing you to cut the strip into two pieces, rather than
wrapping the whole strip around the corner. This will result in a very neat installation.
First, measure the distance from the edge of the last strip that you have hung to the corner. Do this at several points between
the ceiling and the baseboard. Determine the widest measurement. Cut a strip of wallcovering 1/2" wider than the widest measurement.
Save the remainder of the strip. Hang the first side into the corner and extend 1/2" around the corner onto the next wall. Measure
the remaining strip for the second side. Use this width to establish a new plumb line on the second wall. Once hung, it will overlap
the first strip into the corner. Match as closely as possible. Any slight paper mismatch will not be noticeable. Reglue the overlap
using vinyl to vinyl adhesive.