How do I preserve signatures on a soccerball?

Answer 1

you have to not touch them and put the ball in a case. You might want to invest in a display case with at least 50% UV protection. Sun light will do it's damage, even reflected sun light.

The Ideal conditions for display would be indirect lighting, at a room temperature of 65 - 70 degrees, and 50% humidity. Always check your signatures periodically for signs of fading or deterioration, and avoid excessive handling.