You can simply paint between the lines, or color in blocks of paint before using pen and ink on top of the dried paint. The paint will leave a pleasant, light texture from brush strokes. Advantages:
Perhaps all the dragons of our lives are princesses who are only waiting to see us once beautiful and brave.
On the average, dragons live 1,200 human years. A dragon's life is not boring by any means. They live to learn, and to gather knowledge, as well as a huge hoard of treasure.