Her face shape, hair style, and hair color

Glasses

Eye color

Skin tone (Light)

Shirt

Pants

Scar from surgery (Without the zipper)
Do not look up zipperheads by itself! It's apparently an insult to Asians!

Tattoo on the scar

Cara wears the purple one because the awareness color for Chiari (Its also for Pancreatic cancer, domestic child abuse, Leukemia, etc) and to remind others and herself that she won't give up the fight.