It's a great thing to have a go-to skirt pattern that does not fail. One that can be easily sized up or down, made short or long, and requires a single pattern piece cut out twice.
I use Vogue 7341. Here it is made up in a bright, bright flannel for Clara. I cut it a little wide at the waist so that I could gather it at center front and back. I also ditched the wide waistband piece and just cut a straight strip that I turned into a very narrow waistband. Side zip, hang overnight, trim the bias sag, hem, and I'm done.