Más cara que espalda is a funny wordplay that comes from the Spanish popular saying “Más cara que espalda”, which literally means “More face than back”
Let me explain: “To have face” means ” to be cheeky”. So, if you say “you have more face than back” you are telling someone he is “shameless” or “unapologetic”.
On the other hand, using the literal meaning, It would just say that something resembles more a face than a back. It fits very well with my style because what I mostly paint are strange faces.