dood, i want to make one!! but with luigi decorations...
(i wist'd this, so hard.)
The basic pattern I used was to use size US 6 and cast on 34. Just knit in st. stitch for about 5 inches. Then use US 5 and knit in an odd k2p2 ribbing (there will be 4 knits together where the seam is) for about an inch or more. Then seam.
When I worked the chart, I knitted 4 rows of st. stitch and started the chart 1 stitch away from the starting edge.