Great work man!! Keep it up! :)

These are beautiful Irvin! I really feel like you caught the essence of them. Feedback wise, I fee like maybe if you softened some of the transitions to help get a bit more variety. A little trick I use to get a sense of life, or give my portrait like there's a warmth to them, is I'll use a Alizarin Crimson, or a similar appropriate, warm value, in the corners of the mouth, along the nostrils, and in the corners of the eyes.