Step 1: Pattern acquisition. Status=complete (link). We're starting with the duck pattern, and adjusting from there.
Step 2: Fabric acquisition. Status=complete. Battled my way through the crowd of crafting crazies who decided that a little bit of rain wasn't going to keep them at home this afternoon.
Step 3: Pattern modification, layout, and cutting. Status=not started. This is always my least favorite step...
Step 4: Costume fabrication. Status=not started.
Step 5: Fitting and adjustments. Status=not started.
Step 6: Accessories. Status=not started. What self-respecting penguin leaves home without at least a couple of fish and a Trick-or-Treat bag?