In order for the sliced portions of cork to create a seamless look, the wood letters must first be painted black so there will be a shadow effect between each cork. Apply black acrylic paint to each letter using a small detail brush. Allow at least three hours to dry.
The key to creating a random yet balanced look on the letters is to slice each cork in different widths and sizes. Use a heavy-duty craft knife to slice each cork into wedges, cylinders and triangles.
Similar to assembling a jigsaw puzzle, attach each slice of cork to the face of the letter. After all pieces are laid out and completely cover the black-painted face of the letter, attach in place using hot glue.