Open eye: natural eye, natural look, flows naturally with the eyes lashes. Best for the ones who pushes their lash fills. Used for second map called fillers
Kitten eye: Popular fit for most, different look when changing curl. Lift in arch area
Cat eye: Almond eye suitable for some clients. Unique design that clients must be on a regular schedule, once lash shed ,it will look uneven. Can drag eyes down and make eyes look sleepy.
Doll eye: Is an even lash effect like a Russian style. No wispy.