It doesn't necessarily mean that someone is shallow if they turn you down after seeing your picture. Many people have very specific "types" that they know they are attracted to, and that's just how it goes. I don't think it's shallow to acknowledge that one is not attracted to everyone. But make sure you are sending pics that show you at your best. Sometimes there are other elements in the picture that turn people off.
The world opens up... when you do.
Oh, oh, can't you see? Love is the drug for me. ~Bryan Ferry
"Love is that condition in which another person's happiness is essential to your own." ~Robert Heinlein