What a fascinating hunk of bone we have sitting up there at the top of the spine! It’s such a familiar image, but with each sketch I learned something new. I would love to get my hands on a real skull or at least a good quality model; something is definitely lost drawing from photos. Still, this has been a useful exercise, and should help me to understand how to draw faces more convincingly.
As a side note, look how blue the white paper seems! The photo was taken in the early morning shade at the side of my house, and I assume much of the blueness is a reflection of the blue-grey bricks and siding. This might be an interesting way to study reflected light – hanging various coloured backdrops and seeing how the colour changes.
