My fifth and sixth graders also created Picasso-style portraits. I've done similar lessons before, but I used the directions from Deep Space Sparkle this time. I was really happy with these results.
I gave students the option of outlining in paint or oil pastels and everyone chose pastel. I will say it is a bit harder to get fifth graders to make cubist portraits than it was for first graders. Once the kids were willing to loosen up a bit, the paintings turned out fabulously!