I am sorry it didn't go well.
My first show was a bust too. I didn't even make my table rental back and it was only $25...
I agree with Rene... Make up a list of questions to ask the organizer based on what you noticed didn't work with this show.
Also, chat with your neighbors at each show to find out where they have been successful and what has worked for them.
I see every show as a learning experience...
Don't give up, you will find the right place..