Painting on a watercolor block is perfect for painting with watercolors because the “buckling” is very slight. When removing each sheet you use a palette knife but I was in a rush and used a Exacto knife with a #11 blade and marred the surface edges of the next sheet. Even though I thought the damage was slight, it was bad enough to scrap the idea of using watercolors.
I have now moved to “Plan B”. I used a black Sharpie to go over the lines that I had already drawn then gesso’d over the entire surface. This is going to be my experimental project using oil paints and it will be interesting to see if the final outcome will be worth ever doing again.