Don't worry about getting lapped in your first crit. It happens to most people I bet. Unless they are taking on fields far weaker then themselves. The important thing is to finish races your first few times. I'm happy for you that you were able to stay with the pack. My only crit this year I got dropped on the first climb. My power to weight ratio is very bad even with men. So you can imagine how bad it is with women 50 pounds lighter then the men.