I don't think there are any directions out there; I know Gerogene would have inlcuded them if she had found any. But MissPrissy just asked me the same question, so here's what I told her in an email - this is how I'd do it:
1. To make the pattern; take your dish, and use a dressmaker tape measure to measure the diameter from under the dish and around to the center top, adding maybe 3 inches of ease (which adds 1.5 inches ease all around). This measurement is the corner-to-corner diagonal of the finished square, so just mark two 90 degree intersecting lines of that length and draw the 4 points into a square. This will give you the bottom plus the fold over for the top. I'd mock up the pattern and just do a quick fit to the dish to make sure it fits.
2. Cut the fashion fabric, the lining, batting and the binding. Cut the same layers for the handle, which appears to be maybe 2.5 or 3 inches wide and the length is the diagonal corner-to-corner measurement of the folded up square. So if the folded up square is 14 inches from corner to corner, that's how long to cut the handle, which will have a 7 inch drop when the carrier to closed up.
3. Quilt the layers (walking foot of course) and bind the edges. Quilt and bind all four edge of the handle.
4. Attach the binding to the quilted square.
5. Cover the rings (Susan Bates knitting rings, either 1 or 1.5 inch) with 1/4 inch grosgrain ribbon. I think a dab of bridal glue like Magna-Tac 809 would hold the ribbon to the rings, and then you could add another dab or a few hands stitches after the rings are wrapped. (Those bare rings in the photo bug me: I like finished surfaces.)
6. Loop a piece of binding (looks to be 4 inches maybe) through the rings and sew those loops on two opposite corners. And with me being the fussy type I would also make the fabric loops neater (i.e. not spread apart as in the photo) and I'd stitch the loop closed at the edge of the ring with a zipper foot.
7. Sew on the handle and you're done!
Here is the photo again so you can follow along with the directions:
Phyllis