Paint the wall with a base color and let it dry. Use a yardstick to determine the width and length for your chevron stripes.
Decide where you want the chevron’s peak at the top of the wall; mark this as point A. Measure down the width of a stripe with a ruler and mark point B; use the level to ensure the marks are vertically aligned. Measure the length of a stripe from the peak to the edge of the wall and mark point C. From that mark, measure down the width of a stripe to mark point D. Use painter’s tape to connect points A and C, and points B and D. Cut the tape with a crafts knife to create sharp corners.
Tip: Mark the wall from the top of the wall to the bottom for one side of the chevron, then move to the other side.