the hair is turning out beautiful with the colors! i would recommend playing around with the idea of coloring in your lines on the face to match skin/shadow tone. it might give you a softer look. I think the hair drags the eyes up to the face as the focal point (esp as one of the redder colors contrasting with the blue) but if there are too many details in the face it could get busy and the eye will get distracted. maybe separate the wrinkles on different levels and toggle them on and off to experiment with which wrinkles you really want and which you might be able to leave out, and see which combo you like best! im also no expert in lighting, but i'd double check the shadow on the neck under the chin by recreating the lighting you want irl and seeing how it looks (altho i might be just totally off if you're referencing a photo to begin with and that's what it looks like lol) Otherwise, you're off to a great start! Keep it up!