I'm one of those who doesn't like alla prima painting. I paint in very thin multiple layers, because I like the visible luminosity effect of underlying colors. I have oil paintings I did over 40 years ago applying no rules and they are still solid, no cracking. The only issue I've had over the years was using/mixing different brands of paint. So, now, I use Old Holland exclusively. My procedure is simple. I do a thin monochromatic wash in to establish the composition and kill the white. It's hot where I live and thin layers dry very quickly. Before working another layer, I lightly oil the board/canvas. BTW coffee filters (which are lint free) are great to rub out, or even apply and manipulate, color. When the underlying layers reach sufficient rich color blend, I then add the medium into the paint for the refined detail work. The final painting is usually comprised of 3-5 thin layers of paint, with the final layer the "fattest", and the surface is smooth. While I love the "spring" brush action of painting on canvas, I have found that with highly detailed work the canvas will lose some of the tautness when wet, although it does ultimately dry taut. I prefer using the boards as substrate, knowing that they will not tear or sag, and if the painted surface is scratched a fix is easy.