I thought I'd post a more extreme example of the process. One of the pictures was supposed to be of Bernie and his Grandpa inside their local Newsagents, Bernie is browsing comics and Grandpa was talking to Mr. John the owner.
This meant that in order to produce the image in 3D I would need models of:
Mr. John, Bernie (outdoor clothes), Grandpa (Outdoor Clothes) and everything inside the Newsagents.
I didn't have any of that. So I roughed out a basic layout of the Newsagents interior using shapes and a free prop plant I found online, slapped on a few decals to give me an idea of what certain areas would look like and then figured out character positions using the models I did have (Including a basic squirrel head and male body). I also refined the process to only rough sketch the parts I absolutely needed to so there isn't a full image for that aspect.
Also the text on the pop fridge, sweet packets and numbers on the clock are in 'Eulish' the language spoken by the inhabitants of Bernie's universe. I made a font for it so I can write things easier.