Sit down and paint with watercolors. Work on several paintings at a time- while you wait for one to dry, begin painting on another paper. Paint on and rotate the papers until you are satisfied with the way each one looks. When they are dry, draw on them with a pen. You may have a clear vision of what you want to draw on some of your paintings, but let the watercolor inspire you! Watercolor and ink is one of my favorite combinations. Check out this beautiful bird a student created using this method: