Very difficult, the feather patterns of the Great Horned Owl. Lots of micro glazing, warm and cool push and pull, Zinc White. Shadows range from blue to red to green, to green and red. First the shadows got too dark, then the highlights too even. Always love doing owls. One out of ten turn out looking good. In fact, this owl was done right over another one that had problems. 9×12 on canvas.