The first time I came across the Wizard of Eastwood I thought of Gandalf the Grey and then of Albus Dumbledore. It took some time before I concluded on which angle to follow. Some days ago I saw a post of an artist who mentioned Kevin Keele and after going through his works, I saw one that could fit this description.
I didn't change much, I twisted his shirt though and made some changes to his eyes, beards, robe and staff.
Bye.