Hello my local museum wants me to bring in some of my photos to display for their grand opening. I have never displayed any of my work to the public so I need some help. What is the best size of photo? No bigger then 16x20 ) What is a good frame? there are so many to choose from. Do you want big frame, wood , metal, thin, fat,? Also they asked me to mark them for sale. I have no idea what to charge or what to even ask. $10,20,1000? I have no clue. The only thing they asked was no bigger then 16x20 inside the frame and no saw tooth hangers. Do I sign the photos front,back, not at all? thanks for the help.