the other three are pretty much done. Actually, I overdid the square one, but that happens. (can't make a masterpiece every time...)
This one was never quite satisfactory so I keep working on it, searching for something. In a way it has been like watching rainwater fill up a river bed. It takes a long time and the characteristics change slowly.
This is the latest version. some of the white is just acrylic that is still drying. It will become more transparent with time. But this should give you an idea of where I am going (and as you scroll down, where I've been with this one)
if you need to see them seperately, just click on the image and it will open in it's own window for you