I draw anime-style pictures and I wanted to start using some watercolor pencils. I did a few quick tests last night by lightly coloring with the pencils and then using a damp brush to spread the color. Well, the colors looked great but the lead from the pencil got smeared a little as well. What can I do to prevent this, or, is there a medium that I can ink the original sketch in so the outline won't smear? Any tips are appreciated!