Hand Painting Skin Tone Ref

You're a great artist to be sure, but I'm sorry, this isn't a tutorial. This is a "look how good I am" image. A tutorial would tell you how you achieved each part: for example, which settings you used, which brushes, opacity, etc. Something like this will not help a learning artist understand how to achieve the end result, it's basically just showing off your own skill. Don't feel bad because sadly a lot of artists do this, and as a learning artist it's been very frustrating to me. Needless to say you're not obligated to teach, but if you say you're going to teach then at least do that.