Not knowing what you do as an artist, I would suggest you dip your toes into the water and upload 20 or so images and then ask for a critique. Here's my 2 groups:
I would invest some time in reading the discussions and then see where you feel you would do well with your images. This is mostly a business site for many here and if this isn't a "business for you then consider just enjoying the group of artists here!
be sure all your images are ready to print, they should be clear, and sharp up close, i recommend scanning them in. otherwise they may not print it if the image isn't up to par in the printing dept.