Hello Harold and Ann,
Welcome to the board.
Your fears are perfectly natural. Most everyone regarless of shape, size, looks, etc. fear not being good enough or that someone else is better or will do it better.
Swingers come in all shapes and sizes with different likes and dislikes. There is something out there for everyone and what it takes is the patience to find those that are a match for you. Sometimes it comes quickly, others it takes a long time.
The best thing to do is not let your selves be your own worst enenmy. If you are comfortable with who you are it will show and will help open many doors for you.
Have you explored any of the websites that have swingers ads on them? I believe swinglifestyle.com offers a free membership. You may want to browse through there and just see how diverse the ads are.
Also when it comes to swing clubs we have seen a wide variety of people and ages although some clubs do cater to more specific type crowds.
Hope this helped some, and since you have already taken the first step in posting, why not drop in the Introductions forums and say hello, then read throughout the New Swingers Forum. You will find a lot of your questions answered there and for what you can't.....don't hesitate to ask!
Lori