Here are 2 versions of the same image from Shadow Bay, chapter 4:
Version 1: pencil & china marker on card.
Version 2: pencil, china marker & acrylic paint on card. After the acrylic paint, I emphasized the black outlines again in china marker.
It's interesting to see how the gray tones add depth & atmosphere to a piece. Although I liked the earlier version, I think the monochrome tones add a lot. Also interesting to see how the image subtly changes -- lines, details & so on. Personally, I like to see behind the curtain once in a while & get a glimpse of the artist's process. I hope you do, too.