Since I had no time to waste I bought a downloadable pattern from the Colette shop. The PDF contained 48 pattern pages that had to be glued together. Not a job I was particularly looking forward to, so I waited for a sunny day and took the whole shebang outside. Note to self: there are downsides to working in a garden. Especially on a windy day.
Eventually the pattern was assembled, matching up all letters and numbers. The end result: a piece of paper that measured 1.25 x 1.60 meter. So glad I confiscated the garden table for this job!
