The photo at the top is probably my favorite piece from the workshop, stitching based on a drawing of perennial salvia. You can see the whole thing (about 15" square) in the bottom left below, along with other exercises. (Double-click to enlarge.)
Here's another sample where three of the designs are worked off a drawing of a branch of ash leaves. The upper right corner is a trial of the variegated black-to-white thread that Paula had us try. It provides an easy way to build in serendipity, as the white disappears if sewing on white fabric, or the black if sewing on black (as in the set just below the white sampler).
And a final example, with the panel on the right a riff on early drawings of clover, a couple of other permutations of the ash leaves, and some simple squiggles just for fun.