It’s trail and error, at first, to get the right length and look that looks great on your own eyes. Lasjify has so many options to choose from. I’ve learned if you have average to small eyes and lids (versus deep set) sticking with 10-11 lengths gives a more natural look then decide on the fullness. My favorite is the E2. The website easy to navigate and ordering is a breeze. AutoShip is my preference. They inform you of a new shipment in case you want to change it.