Not a Diamond select fan, I hesitated for a long time to get the Anthony Hopkins figure, good pick! The face is extraordinary! So I started on a new character from Coppola's Dracula movie.

Body + Head: Westworld-Dr Robert Ford (Diamond Select)
Cloak: Darth Vader (Kotobukiya)
Hands: Ghostbusters (Diamond select)
Nepalese knife: Chucky (NECA)
Severed Heads: Sleepy Hollow-The Headless Horseman (Mcfarlane)
Third severed head: Sin City-Shelly (NECA)

I enlarged the hat, added the beard, lengthened the hair, added scar on left eye, sculpted the jacket, the belt, the cross pendant, the fur cape collar, the front of the cape that goes up to the neck, modified the knife . I also modified a head (which was one of a man!), sculpted the hair. Paint + varnish.
A long job, but not insurmountable if you want to do your own. You just have to assemble the right elements. I'm happy to have kept the cape and the severed heads, that's also what motivated me to start this work.
Take care of yourself