I Had a fun opportunity to do some on-the-spot drawing recently when I was hired by the Regional Arts Comission (RAC) for a kickoff event for St Louis Fashion week. I set up in a little booth and spent a couple hours doing quick drawings of the various fashionable folks in attendance. I tried to get through each drawing in about 5-8 minutes and I think I finished about 18. Most of the drawings were given away to folks who posed for them, but here are a couple that I found images of, and a couple that I did beforehand to practice.
I know next to nothing about the fashion world and have never worked anything like this which made it a challenge. I tried to just focus on looking for interesting colors and shapes. The time limit was probably a blessing because it forced me to move quickly and not worry to much about getting every line right.