Dennis Wise

How do you do these? Sorry if you've explained it before, but I didn't see it if you have. Is there digital work involved - are you using exclusively paint - if so which? I've been peering at this, and one or two of your others, (mind you, I'm in fairly desperate need of new glasses) and I can't identify the technique - which is driving me slightly nuts.... I know very little about football, and don't know this lad at all, but I did know some of your other subjects and immediately recognized them.