Since this is an official joint there are rules and prizes. You can read the whole kit and caboodle on the thread, but here are the main points so you can get an idea of what the sewing gurus are looking for.
1. Participants must use TWO or MORE commercially drafted patterns.
2. No self-drafted pattern pieces may be incorporated; however, typical alterations for size / fit are allowed. The pattern pieces may be altered to allow the patterns to be merged together. (i.e. if using sleeves from one pattern into a blouse pattern, the sleeve and / or armscye pattern pieces may be altered to fit together properly.
3. Resulting garment must clearly reflect the use of each and every pattern utilized. The design of the finished garment must reflect elements of each pattern. (i.e. simply changing the collar or adding a patch pocket from one pattern to another pattern would not be considered a FrankenPattern.)
4. Each entry must include explanation of which pattern pieces from each pattern was used.
5. Actual pattern pieces must be used. (i.e. may NOT just use the concept from one of the patterns.)
6. Elements from each pattern have to be combined into one garment. (i.e. Cannot use a top from one pattern & pants from another pattern and call it an franken-outfit.)
7. Adult garments only; women's or men's designs are allowed.
The prizes are yet to be determined, but should be revealed before the actual contest gets underway. So brush off your "How to make a monster" book and get your evil henchmen to collect the appropriate parts. It's time to make the best damn franken pattern garment you have in you. Then teach it to tap dance. "PUTTING ON THE RITZ!"