Here's another demo of the various aspects of a still life. This was not really about the application of the paint itself (thick/thin/brush marks etc) so I chose to paint the first three with just burnt umber and the last adding only black and white. The lights in the first couple of stages were obtained by wiping back the paint. The top left shows the line worked used to place the proportion. Next is an example of blocking in the tone. The third deals with edges and finally a combination of them all with the highlights added and the value range expanded with the use of white and black.