Distortion towards abstraction

I like this photo of Larry Poons.
I chose it for my 'warping the grid' portrait. He got grid lines drawn on him. Then I used the painting in the background as inspiration for how to warp the lines for my pencil drawing below.
Yes, not only pencil. I forgot which exercise was which and began with charcoal. I rubbed most of it off and continued with pencil. Size 500mm x 700mm. I will crop the height to 600mm at some point I think. Well that was the intention. The grid began and ended 5omm from the top and bottom. But I quite like the voids and how the drawing encroaches into them. Now I've got to warp-the-grid again by drawing a straight grid on this drawing and warping it on the new one. Can you tell the next exercise will be abstraction?