Sentence:  The area adjacent to one edge of a piece of affixed material - or simply of a painted in form - will be shaded to pry that edge away from the surface , while something will be drawn , painted or even <WSD>pasted</WSD> over another part of the same shape to drive it back into depth . 
Meaning of the word marked with <WSD> tags:  join or attach with or as if with glue