This is a fun painting! The sky takes a lot of blending don't let Bob fool you! I spent a lot of time blending the sky, but happy with the results. I had a bit of trouble with the eye of my wave. Every time I "scrubbed" in the color, it seemed to be taking the color off. It ended up with a blue hue, but it seems to work. These are Ross oils on an 18 X 24 canvas.