A couple of years ago, I drew this portrait of Abbey Lincoln in one of my sketchbooks. I was experimenting with painting a shape and then inking line details on top. The paper was a bit too thin for the gouache painting so some wrinkling occurred and came through in the scan along with the gutter fold of the sketchbook.
I opened the scan in Photoshop and converted the blue painted shape into a single color. This also captured a bit of the gutter fold shadow creating a crease across the face area.
I then converted all of the ink line details to solid black. This also captured some of the gutter fold shadow along with some additional shadow areas from the wrinkling of the paper.
I cleaned up the black from the wrinkle shadows as well as the sketchbook edges, but decided to leave the gutter shadow marks. I liked the accidental aspect of it and how it referenced the sketchbook, also how the line related to the diagonal black lines in the background. I didn't realize though that some might see this mark as a cut across the face, not my intention of course. And I realized that the reference to the sketchbook was probably only apparent to me. So I decided to remove the gutter shadow "cut" mark.
I also lightened up the blue a bit. And looking back at this piece, I remembered that I had made an alternative version, one with less distortion.
I liked how this version turned out, although I think it makes the body appear a bit odd in relation to the head. Overall, I prefer the distorted version, even better without the cut.