These are some of my favorite subjects to paint, strawberries and oranges, especially a peeled orange! Painted from life.
Below are some "work in progress" pics. I don't usually start with a white surface. Most of the time I tone my surface with a thin mix of raw umber, and let it dry before starting to paint. But, I was just impatient to start this one, and I didn't have a pre toned board to use.
It worked out ok, but I think I like painting on a prepared surface better than right onto the white gesso.