The device you ordered requires an Upper Teeth Impression and a Lower Teeth Impression. Both impression kits are included in your package. We MUST know how your teeth come together to ensure a proper fit of your device. The first step in the process is the taking and approval of your upper impression. Once you have completed this first step, you will get an email with the next step in the process. Please click “Next” below and follow the step by step instructions for taking an upper impression.