Here is how I work with gouache. Click the thumbnails for larger images
1. I make some small sketches in pencil and
choose one I like.

2. I scan the sketch in Photoshop and
enlarge it to the size I want and make

3. After printing the sketch, I trace the
image onto the watercolor paper.

4. I outline the final sketch with ink.

5. I make small color studies.

6. I choose a color scheme and then I paint
the final drawing with gouache.

7. I scan the finished painting in Photoshop
and make changes again if necessary.

8. The finished illustration.