Freehand sketching in ink from a photo reference I found online, to practice conveying that lots-of-stones look without drawing all the stones (photo credit: K. Mitch Hodge). Micron pens + alcohol markers.
A motif I having been enjoying in my sketchbooks lately but this time experimenting with positive and negative space. Watercolor and Posca pen in 8.25x11.75 Moleskine sketchbook.