In the past, I had some signatures that looked like:
Where a solid silver/gold star represents a league championship, a hollow silver/gold star represents league runner-up (conference championship), and colored solid star represents a division championship, and a hollow colored represent a wild card (if its significant for the franchise, like the Brewers).
If you would like signatures like these with your favorite teams, let me know!
Completed:
In The Works (In Order of Priority):