The student who did the piece on the left was completely blind but you can see where I hot glued around the nose, eyes, mouth etc. so he would know when to stop with a certain color.
Students were also required to do a cross contour drawing without a starting image. One visually impaired student tackled hands doing a pinky promise in cross contour.
Wiki stick shapes were formed by this blind students who would draw lines with rulers outside the shapes and made curves inside the shapes to create their cross contour drawings.