You need 50 posts before you can start a new thread in Share Your Work Critting forums
Read the SYW general stickies here and in the SYW sub-forums where you post, especially in Query Letter Hell SYW.
See especially the Share Your Work Guidlines and Before Posting In SYW and Some Advice for Poster New to Share Your Work.
If your excerpt is not suitable for everyone (that is, at least PG or PG-13), contains adult content or language, place a warning in the thread title. Potential issues include:
Keep in mind that threads in Erotica SYW contain adult content by default, and you need to provide a statement via Conversation to AW Admin that you are over 21 and wish access to the Erotica protected forums.