Here is a reference sheet for Sketch! Her original/ main design is the one on the bottom with the green shirt.  I only ever sketch her for new styles, or when I want to redesign her. She has all of these forms, but she really likes her original. She's basically a try hard nerd, but she's lovable. @De_AlterScorcerer, this is the OC I want you to draw for the adoptables, since she's a "Sketch" you can draw her however you like, and even give her a new design!