[Help] Player-created textures?

Hi all!

I’m using Unreal Engine 4 to make a Paper Mario-like RPG. As to be expected, I’m pretty new to the engine, but I digress. I would like to have a system in my game where the player draws the faces of their in-game party members and makes houses for NPCs by drawing the doors and windows, much like Drawn to Life from the Nintendo DS. Would something like this be possible in Unreal Engine 4?

Thanks for any responses!