Forming the waterfall

I made a couple of braces to make sure the waterfall manifold was level before I made the forms that would hold the concrete in the shape I had designed for the top of the waterfall.
Once again I underestimated how much concrete this top portion would take, and quickly sent Tommy to get 3 more 60 lb. bags to add to the 3 I already had. That turned out to be enough. I also had half bag of mortar handy to fill in the gaps I knew would show up when I took off the forms.
Once again, I learned a few things in my process. Inexpensive 3/8" plywood is not thick enough to use as a form. It buckled and warped-but I made it work. Concrete with little rocks is harder to finish on a vertical shape than just mortar. Again, I made it work but it was a lot of work. I don't really know how to get concrete in all of the areas inside of a form. I thought I did, but I don't.
So here I am, 5 months after I marked the location of the spa on the grass, with the basic structure done. I'm very excited and I've started thinking about tile options.
Lots of work still to go, and the days are getting shorter, but it's looking pretty good.
I didn't plan it, but it's kinda cool that I accomplished something like this on my dad's 100th birthday. Happy birthday, Pop!