Based on an informal anonymous critique that happened for icon makers, you comment with your username, and those willing reply with thoughts on any fiction, fandom or original, that you compose. It does not make a difference what subject(s) your pieces reflect, whether they be popslash, sci-fi/fantasy, creative, etc. This is entirely open-ended. Comments are anonymous and IP is off.
Whether you want to critique or be critiqued, or just peek in, it's worth a look.