I really have to remember I'm not using oil paints. The highlights have to stay white or else forget about highlights. There's no adding in later. It's a process and I'm learning. And waiting for the work to dry is another thing. With oils it's just the opposite. You can let it dry and then have issues because now it's dry! Watercolors need drying time.
The other thing I wonder about is if it's too big a painting for the size of the surface. I tend to go large and then find out that my subject pushes the edge of the paper or canvas. The size of this paper is only 12x16. I think this looks as if it's a huge work. Just another thing to ponder over.
I can hear my painting professor saying "Great job. Now go bigger!"