Well I’m not really there yet, but you know what they say, practice makes perfect. Seriously if you do want a portrait there are some some great illustrators out there some of which you can find here https://www.agoodson.com/search/portraits-illustrators/
however, for fun carry on reading.
I had a play of creating this fine looking lady using the new Procreate 5. It’s still in beta format (yes I was one of the lucky ones who got to try it out) but it’s great.
here are a few process shots and if you have time there’s even the process video which I have slowed down a bit so you can see more of what I did.
I used the photo as a reference and to get a colour palette