If you haven't done so already research 3 images for your scratchboard:
Images need to be 5 X 7 inches to 8 X 10 inches, black and white with grey tones
and then in your sketchbook create small thumbnail skctches exploring composition
In your sketchbook write 2 paragraphs about the use of imagery in the work of Virgin Finlay or Cathy Sheeter
Describe the use of Texture and contrast and composition ( how the images are placed on the page).
Virgin Filay
http://www.bpib.com/illustrat/finlay.htm
Cathy Sheeter
or http://www.aphelionart.com/artgallery.html