The transparent overlays were tissue paper that I'd made marks on with paint, or stamp, or line.
This first image was my last. It's top of the list because, to me, it was a better composition than the following.
These two I find too messy and not well integrated. They have some good points...palette, energy, mark making...but overall not as well resolved as the first one.
I will probably go back to these and make them work better, but already am on to the next lesson so they'll just have to wait.
Don't go too far...I'll be back soon.