To paint a honeycomb design on a wall: 1. Create a base line using masking tape and a spirit level to mark where the hexagon shapes will be placed. 2. Use a cardboard template to draw hexagon shapes that will then be cut out of masking tape and arranged along the base line. 3. Paint the shapes using a small roller or brush, then peel off the tape while the paint is still wet to reveal the honeycomb pattern.