Inch by inch, been trying to work on this.  I like the drawing.  Been working on a tonal translation; establishing the light source and the shadow shapes.   First cleaning up the drawing and sizing elements and making sure they flow with the figure. Then putting some tones underneath the drawing (on multiply). At this point, I am separating elements and organizing layers. Figure is on one layer, dragons on another layer, etc.; paying attention to the hierarchy of the layers. Tones will be on it's on separate layer; there is a reason for this. If the tones are on a separate layer, I can now easily change the color of the shadows to correspond to the colors which will be added later. Then I turn off the line drawings to check and see if the shadows tell the story. I have created a drawing which will give me ample opportunity for pleasing design with the shadow shapes.