Portrait in progress

I've taken some photos as I did Sam the Border Collies portrait. I used Liquitex Heavy Body Acrylic paints - Paynes Grey, Titanium White, Burnt Umber, Ultramarine Blue, Raw Sienna and Alizarin Crimson Hue Permanent. I thinned the paints with water and Cryla Flow Enhancer. The portrait is painted onto Daler Rowney Studland Mountboard.