I always enjoy looking at an artist’s original pencil artwork before it is inked. It’s fascinating to examine how much the image changes. Of course, the before and after difference varies from artist to artist. For instance, compare the pencils and inks in the artwork below by John Bolton. His portrait of Colossus (from Classic X-Men #5‘s back cover) is radically different from inception to finished product.
In this pencil drawing, Bolton explores the planes on Piotr’s face leaving no contour undiscovered. The differences in line darkness, shading and gray tones add dimension to the portrait.