Will it be hierarchical or all-over viewing? Will it be "pretty" or "ugly"? In the meantime, I highly recommend this type of passing work back and forth. This is one of the fastest learning methods I've encountered.
WIP: work in progress
This image is one of hundreds captured on timelapse. Savannah-based artist Troy Wandzel and I are currently collaborating on a triptych. You may see Troy's timelapse is his first session here. When we end work on these panels we hope to splice all the timelapseS of the painting sessions together.