Diana's drawing illustrates an exploration in technique. Each object has been rendered with a different method adding to the individuality of the forms as well as a textural element.
The tondo format has created a very focused composition in Jill's drawing. It seems to highlight the small water pale in the foreground.
Rachel's drawing has soft light with smooth transitions in tonality indicative of the "stipple" technique.
Ryan has created a tonally rich image with a full range of values and mark-making that addresses light and form.