To keep the pattern alert group as organized as possible, my suggestion is to post each pattern in a separate post. What this accomplishes is, separate posts generate key-words and tags for everyone which would facilitate successful searches, and therefore, successful trades! YAY!
I realize that posting each pattern separately can be time consuming, so perhaps posting a few at a time, as time permits, is more feasible.
Please add photos if possible. If you don't have a photo, try doing a google image search for the pattern, and save it for uploading if you can find it.
Tags: alert, multiple_patterns, offer, organize, pattern, pattern_image, searching, trade