Questions...
Am I too old to do this, to be creative?
Creativity has nothing to do with age; it's not something that teenagers only have. With age you get experience and your creativity grows if anything. But creativity is also a skill you either have or don't... bit like being artistic or musically skilled, you're born with it and can't really learn to be creative, artistic or musically gifted.
Age and creativity:
http://creatingminds.org/articles/age.htm