Art style of english illustrator John Higgins, born in 1949 (Grailquest, Razorjack, Judge Dredd, Watchmen, Batman : the Killing Joke ...)
Trained with 50 artworks from John Higgins
Triggerword (if necessary) : jhstyle style, you can use tokens like "color illustration", "fantasy"
Don't use a photorealist checkpoint, "rev animated" works pretty well.