Looking for inspiration and a new direction, but I'll post this in the meantime! I wanted to work with just one colour, white, on a layer over a solid black layer. The only tools used were the hard edged brush and the eraser, both at varying levels of low opacity. I worked freehand from my own photo: http://www.pbase.com/wrightair/image/66449083
Step by step at http://www.wrightair.co.uk/digital/...istep/index.htm