Decide where to put your writing on the wall lettering. Popular places include above beds, mantles and as decoration in short, empty hallways. Visualize the letters at eye-level on your walls to figure out how they would look in different places.
Clean your chosen spot with a mild cleanser. Spray some cleanser on the area and wipe it clean with a soft cloth. This removes any dirt and grime that might prevent the vinyl lettering from sticking. Allow the spot to dry for about an hour before applying your letters.
Place the letters on the wall, and arrange them the way you want them. Attach them to the wall with a little painter's tape and use a small level to ensure they are straight. Using the level, draw guidelines onto the wall above the letters.
Remove the letters from the wall and remove the protective backing. It should peel away easily at the corners. This will leave the vinyl letters attached to a transfer page. Tape the transfer page, right-side out, back onto the wall in line with your guidelines.
Press the edge of a credit card against the upper left corner of each letter and push in and down slowly and firmly. This transfers the vinyl to the wall. Remove the painter's tape from the transfer page and peel the page slowly away from the letters on the wall in a horizontal motion.