This project was all about character design. I had to make a shy, futuristic postman.
First things first: a mood board for inspiration:

Generally I don't like sci-fi or futuristic themes, but I suppose that only resulted into this project being something extra challenging.

Second step: silhouettes.

I wanted to create a skinny boy that could easily hide behind things (because he's just THAT shy, you see?). He also wants to place objects behind himself and whoever he has a conversation with, hence the envelope (assuming those still exist in the far future...)

I also gave him his hair and a scarf or some kind of turtleneck to cover his face.