Blue ZA Painting

I am using acrylic with the only mixing of colours is for the background, the others coming straight from the tube. In these recent paintings I am using more colour. Usually : cobalt green, cadmium red, cobalt blue and cadmium yellow, which highlight the images. I am also, in general, though not perhaps in this painting, leaving more space around the images. Also the straight lines are becoming less rigidly straight and some mistakes are not being corrected so that the images seem less perfect. Though it is possible to have the frame depicted as the additional image, I am now shipping good in a 4" diameter cardboard tube so the purchasser can choose their frame.