clearify instructions and error messages
7 of my first 10 cards came back "validation failed". Was it too blurry? Did the card not fill the screen? Was the resolution too low? Let me know what validation it is, and why it failed - and maybe put a little quick flash animation on the screen - "new to lasso? this is how you MUSTÂ position the business card for it to work - and here's some lighting tips to improve results", etc.