Everyone is encouraged to re-read pp.46-48 in 'Drawing on the Right Side of the Brain' and repeat this exercise as often as you want to to build both your perceptual skills and your mental L-to-R mode shifting skills. Everyone is also welcome to re-submit this assignment (decorating, filling with zentangle, expressing & interpreting the positive & negative spaces of the vase/face illusion) for a higher grade before the end of the semester.