Oh please don't give up!! I would revel in being part of a group of seasoned quilters! You are so fortunate to have such wonderful talent surrounding you! Think of how much you can learn from this group! Like everyone else has said, take it one step at a time. And... don't be so hard on yourself. I am a perfectionist who is learning to reform... I still want things totally perfect but I am learning to look at my work objectively and see what I consider a tiny flaw 99% of the people would never even notice.
I say go for it... and be thrilled you are a part of such a wonderfully talented group! You too will be one of them! :-D