We paint outside in various parks of Seattle. Sessions always start with the demo. My students prefer to observe me to paint and then to apply the theory we studied prior, to their own canvases.
Before get committed to any color harmony or paint application, think of your design and a placement .
It'a all boiled to a composition. Things you have to consider in composition - unequal space division Creating a focal point, avoiding tangents, active and passive mix, baselines and ground contours, counterpoint, directing lines, entering point, inequality, repetition with variety, rhythm, shape simplification, shape variety.