This post shows the entire process for an interior level/scene of a modern time in a rural place in France, with 2D platform elements where player, who is a cat, will have to go through and in the meantime collect balls of wool around the rooms.
Developed for 2D Art I unit and Project 2D, during the process i could develop the process like thumbnails, sketches, detail sketch, color studies witch later helped me to make the final version where I placed in Unity with a sprite sheet.