Last night I used an old watercolor block page as a sketchbook. I had just opened a little watercolor set ( Cotman Sketchers' Pocket Box by Winsor & Newton) and I really wanted to play around with the cute little blocks of watercolor. I was sketching mostly with ballpoint pen so I couldn't correct anything. Then I touched up some of the drawings with pen and ink after the watercolor dried.
You can see the little boy's head from the top picture in the bottom corner of the bottom one. I cleaned the top sketch up to post alone because it was my favorite. No judging the bad proportions! Pen sketching means you just kind of....go with the flow!