The bottom drawing is on manila drawing paper, using my kids' watercolor set when I was first deciding to get into watercolor, about five or six years ago. Up to that point, I avoided paints like the plague. I work very quickly and never had the patience for paint. It's still very difficult for me because I am not the most disciplined creative force in the world.
The top drawing was an experiment with a monochromatic color scheme, and I like the way it turned out. One of the most common mistakes I make when working with color is to just use the whole box of crayons. I learned it's always best to limit my palette. I'm not that great with color, so I often default to a complimentary color scheme just so I will at least have some contrast.