I recently stumbled on the vector artwork for the Euro Togger Tombola postcards by Splinter.
I was inspired to have a go at my own card and decided to try something similar for an American football team.
Going through the most well known, Chicago Bears stood out as having a nice colour palette.
I went through a few iterations, trying an American football shape background in place of the circle in the original, testing colour placement and simplifying the illustration.
This is the final design.