After warming up with the 15 second flower sketches, I did this 5 minute pen and watercolor sketch. I used the stopwatch function of my timer to see how much time was going by and stopped at 5 minutes. I started with a pen sketch in sepia, pulled brown tones from the ink with a waterbrush, and then added some watercolor. I'll have to learn how to take advantage of only being able to work wet-in-wet. Right now it seems like a limitation.
Moleskine watercolor journal, Sepia Zig brush pen, Kuretaki mini waterbrush, and Lucas watercolors.