I can finally breathe again! I believe I was holding my breath the whole time I worked on this today. I am so nervous when I work on portraits of any kind, that's why I usually don't do portraits.
While I was putting down the first few layers of skin tone I realized that the paper is not suitable for layer after layer of colored pencil. I also will not be able to burnish the colors in the usual manner. I am okay with that, it means I will have to work in a much looser style.