Looking for critique - planes of the head
Hi! I am looking for critique on these two drawings of the head. I studied the head with the Loomis and Reilly method for a few months, then moved to the planes of the head and studied that for a few months too. Now I am trying to also loosen up a bit and do them more intuitively, still thinking of the whole structure and perspective. My biggest problem is always the cheekbone area. Sometimes it is really hard for me to see the exact transitions between the planes there. And I have a question. When is the right time to dive into shading? Can I also be studying shading while I am still working on structure/perspective and the planes of the head at the same time? Or is it better to keep them separate? Thank you for your feedback and advice!