Experimentation - grayscale
This is something we experiment with in drawing and painting, so I've done a few examples in a sort of textile fashion.
Stitch is included on a few examples. Definition of a stitch is:
•a link or loop or knot made by an implement in knitting, crocheting, embroidery, or sewing
•sew: fasten by sewing; do needlework (wordnetweb.princeton.edu/perl/webwn)
Definitional of grayscale:
•A continuous tone image comprising black, white , and gray data only (authors.nejm.org/help/techglossary.asp)
There are many ways to represent tonal gradations from black to white, here are a few examples:
In most of my examples, I've used a pushed or pulled motion to wrap, reveal or conceal parts of material, board, wood or paper.