I was confused on how to save my art at the beginning of the game so I made this small guide to show you how! It's actually really simple you just have to buy the studio for $1500 and inside there will be an art book with all your art saved :) that's it. From there you can view your art and save it. However, when you save it's a simple screenshot so if you want to save your art before buying the studio I would recommend you just screenshot it.