YWS is really great for critiquing, but if you’re perhaps looking for some more opportunities to get creative feedback here are a couple of sites:

Critique Circle offers critiques for all members new or old, allowing you to get wonderfully detailed crits. Positives: Guaranteed critiques, even for newer members. They also have some nice templates to work with. Negatives: Wait times and a point system that virtually forces you to critique often and in depth (which may not be a bad thing after all).

Critters is another critique site, but more dedicated to the science fiction, fantasy, and horror fields. Positives: Very in depth and professional members as well as wonderful guides on how to critique and take criticism. Negatives: An extremely long wait for critiques. It’s best to only submit your best and most polished pieces.