Goal was to use different painting application methods in one painting, and leaving each visible.
First: drawing with paint, without pencil outlining.
Second: transparent washes, leaving each stroke visible.
Third: painting with bold strokes, non transparent.
Fourth: application of paint by palette knife (paletmes).
Below you see pictures of these four stages, from top left to bottom right. That one was was the last palette knife version.
I should have stopped at the third stage (see the result above).
I went through all these stages in about two hours time. The model was tired by then.