Grrr.... sigh.

I finally got round to sewing the missing press stud back onto my waistband (my expanding waist having been putting too much strain on it, I suspect, but the thread may have simply worn through), and after meticulously sewing all four sides of the stud and neatly finishing it off, I was just about to embark upon my missing waistcoat button when it dawned upon me that I had managed to sew the stud back on the wrong way out so that the socket was on the inside and there was no way to press the two halves together. So I had to unpick the whole thing, and of course couldn't face doing it all over again. The project goes back on the heap...