One of the skills necessary for a Fashion Designer is to be able to do a quick sketch for a client, on a napkin, at a lunch meeting. This kind of “30 second sketch” requires some practice and is best done always using the same pose. It is a bit of a formula but helpful for these kind of situations.
Here is a template I developed for one of my classes to help students learn to do this in 30 seconds.
I divided the figure into 3 sections. Note that the bottom line is actually the ankles so that feet and high heels can go below that line. The top third is also divided into thirds. The top third of that section is the head.
I have also posted some of my quick 30 sketches. You can see that these are all quite small and primarily used to sketch the shape and silhouette of the design.