To use this Pikachu building set, start by sorting the 400 pieces. Then, follow the instructions to build Pikachu one brick at a time. Once built, you can display it on your desk using the flat base. If you want to mount it on the wall, use the notch at the back. Remember, this set is not for kids under 3 years, so keep it out of their reach. To maintain the set, store the pieces in a dry place when not in use. Avoid dropping or mishandling the built figure to prevent bricks from falling off.