Yay! I'm a quarter of the way through! Here's number 25! Compared with the first painting I had done, it's a big step forward.
I've really learned how to capture the depth and see values with these 25 paintings. And I'm no longer worried about smoothing out brushstrokes since I've learned how to work with them and pile up paint to achieve a 3D affect.
Now it's onward into the next 25. Still semi-grisaille, but I'll be using white, ultramarines blue and alizarin crimson and learning the value (no pun intended) of coolness and warmth of colors.