Long. It's usually a long, long process to design a new pattern, and this one is no exception. There were a few "problem areas" in the earlier versions that are finally resolved on this one. The biggest concern before? The "flow" on the vertical repeat was off. The curves looked too choppy and incomplete. It took time to resolve, but after some redrafting and fiddling on Excel and on a lot of graph paper, I'm now (almost) ready to punch another card and try again . . .