Gosh , don't be so hard on yourself, we all have to start some where, you cannot run before you can walk, join a group that has all skill levels in it and stop judging yourself with the best of the best! I began to hand piece last night for the first time in many years and boy am I rusty, my stitches are no where as good as I could have done a few years back, am I unpicking, no way, it is all staying in! The more you practice the better you will get, start with small projects until you get the hang of it. Please do not give up, if you keep at it you will improve I promise you, it sounds to me that you are judging yourself next to these ladies in stead of looking to see how far you have developed as a quilter yourself.
Keep at it!!!!
Best of luck
Gal