Using this lip practice module is easy. First, prepare your tattoo or makeup tools. Then, you can directly start practicing on the 5D lip skins without the need for head molds. Try different techniques and styles to improve your skills. When coloring, be gentle as the silicone is soft. After use, wash the practice skins with mild soap and water. Make sure to dry them thoroughly before storing. Keep them in a cool and dry place to maintain their quality. Don't expose them to sharp objects to avoid damage. With regular practice using these modules, you'll see a significant improvement in your semi - permanent makeup and lip tattoo skills.