Breeds conformation standards?

Hello! I just brought home my new Maine coon & I’m wanting help on how to evaluate her physically? She’s my pet and I love her already, but I’m trying to get an idea of her quality & if it would be worth going to some shows with her, but I don’t want to go to a show with a very poor example of the breed. I’ve never shown before & just looking to do for fun. Thank you!