Hey, just because you are paper piecing doesn't mean you shouldn't take a minute to add some shading. I shade and highlight just as I would if I had colored the area in.
Here's a picture of a card I made with paper piecing and NO SHADING/HIGHLIGHTING to the paper pieced areas:
Now, here's the same card after I ADDED SHADING/HIGHLIGHTING to the tray, and jacket (and the scarf needed something too):
I think it really adds a lot of dimension to the piece (and you know I like that)!
"Queen of the Scene"