The thing works by a process called osmosis, consisting of a plastic tray in which a sheet of water holding paper (like blotting paper) is placed, then thoroughly wet with water, followed by a sheet of semi-permeable paper (like tracing paper) placed on the top. When acrylic paint is put on this palette, it keeps moist for days or weeks - perfect for Mr Slow Painter like me! It comes with a lid to retain moisture between sessions.
The painting is obviously Venice - a quite back water more typical than the usual views you will find on glossy brochures or travel programmes on TV. This took me about a week, with five sessions to complete it. The paint stayed lovely and moist using the new palette, and just needed a little water adding before each session to stop evaporation.
The WIP shows that after the drawing came initial thin washes of colour before going into any detail with the paint.
At our art club last week, I took this painting along for an evaluation by Tim Fisher, a well know local artist, whose comments were fairly favourable, but pointed out one or two things that would improve the work, which I had missed or not thought about, like more emphasis on light source and direction and more fading needed into the distance. His points were duly observed and born in mind for the next one, as I haven't the heart or willpower to go changing things now!