Thankfully I have a pattern that has served me well before - BurdaStyle magazine 01-2012-104. It takes less than two hours to cut, sew, and hem. And it only needs about a metre of stretch fabric, one invisible zipper, and some elastic for the waist.
Bonus information: this skirt is in one of 'my colours'. It's "shocking pink", and apparently makes me appear to be "bright, high-energy, and successful" - perfect for a work dinner!
The only changes I made were that I tried out my invisible zipper foot, and my blind hem foot. I'd never used either before! The invisible zipper foot was a success, and so simple to use. The blind hem wasn't perfect, but it's wearable. Next time I'll be more careful, and this should solve the minor issues I had.
The biggest difference between this version and my first attempt is my butt! Apparently all those lunges at BoxSlim have modified my shape. In a good way, I think...