I know you are nervous, but what an awesome thing to do!
I've been looking for a critique group since I moved to Georgia... but the writer's group here doesn't critique. They are strictly a clapping group, and that is really hard for me.
You inspire me to start one here now! And the nerves are hard, but it gets easier, especially once you see what feedback you can get (that family and friends usually won't give you). I moved here from Seattle, and I was part of a playwrights' group that was infinitely helpful. I just wish I had that again, and some place for my prose writing, too.