Your impressions may not have been good enough for a variety of reasons. For the most common errors, check our question "What are the most common Impression errors?"  The best way to increase your chances for making perfect impressions is to a) read and review the instructions and video as often as you need to be super familiar and comfortable with the process and b) make only one impression and email it to our customer support experts for feedback before making more attempts. Our SnapCorrect team will be able to give you lots of tips on what is right or not so right with your impressions, and to coach you for success.