@ Seth; no you're not wrong. As Martin has subsequently identified, I rather lazily burned the shadow in, and it is indeed not well done. When I usually create a character's shadow, I copy/paste the figure, and then darken and decrease the contrast so that the copy is a dark silhouette. I then (when I do it properly) use the transform tools to flip the figure vertically, and stretch and distort it in line with the sunlight's direction, and then blend it in. I'll be redoing this scene with another pic of me which will this time be taken at a downward angle, and this time I will lay the shadow properly.
John