Welcome Mac!

Once you are a subscriber, you can upload images to the galleries. You'll be able to select which gallery to upload to; if you want critique, you can put it in the critique gallery.

There is a bit of an unwritten rule here, which is that people usually won't critique work unless it is in the critique gallery or someone has specifically asked for critique in a post. That said, I and many, many others would be more than happy to comment on images