After walking by and looking at this, off and on, for a few days, I think I have it where I want it to be. Used a bit of white fluid acrylic mixed with some raw sienna, a bit of watercolor (which I put on the blocks first to see how I'd like it because my stupid Photoshop Elements program is not working right), and finally...a splatter here and there of white gesso to push some things back and make it look a bit aged.
I hope you like it.
I'm already dying to put another sheet on the wall and start throwing paint!
Happy 4th of July to everyone in the US - and hope all Canadians had a great July 1st holiday.