Just when I thought it was safe to use my color wheel, my instructor passed by and noticed the same thing I had noticed: the red-to-orange sections looked too much alike. Back to the color mixing palette. In the end, my instructor sat down and in a few minutes corrected the reds and oranges. So now I have a color wheel I can use as a reference. (Even a couple of the greens received a touch-up.)
I have a few more sessions and then I’m taking a break from going to art class. I’ll see what I can do on my own for a while.