I brought in a stack of magazine photos, and a few students brought photos from home. We did a couple step-by step practice drawings for those who needed a bit more instruction, but most students worked directly from the photos. We also made value scales, noting where the darks and lights were in our source material.
The portrait below is special. I have a student who was born with a cleft palette. She brought in a picture of herself when she was a baby, before her surgery, to use as her source photo. I thought it was unintentionally symbolic that her mouth was the only part of the drawing to be shaded so darkly.
Make it a Wonderful Day!