This is a fun stitch, lots of possibilities. Can't figure out how to get better pictures though - the colours are quite vivid in real life:
I decided to start a new sketchbook just for TAST 2012 and have stapled my samples into it. Seeing all my initial crappy sketches along with the stitched work is a revelation! I used to throw out my quick sketches but seeing the progression is important. Under each sample I wrote lots of notes for future design improvement.
Need to practice the buttonhole herringbone stitch to get it smooth and even. I also need to leave more space between elements - the third sample is too cluttered.