Because I've changed my mind and I'm no longer going to recreate Dorian as he was in the end in the portrait, old, ugly and scarred, I thought that a new moodboard will help others (and me also) figure out better how I'm trying to recreate his look from the book.
Although I have some pictures with Dorian here with brown hair, I will look for a model with blonde hair because I want to recreate the character exactly as he was portrayed in the book.
My Dorian Gray will be a handsome young man with blonde hair and beautiful, clean compexion, with his hair parted on the sides (not sure yet though).