a lot of people have already given advice i was going to say, so im gunna share a resource i use all the time! i use this website all the time when i need to do a warm up or just study anatomy. it lets you customize your sessions, and u can choose from faces, figures, hands/feet, and animals...
im just developing an oc for hellsing! essentially shes a vampire as old as alucard based in the caribbean, and is heavily based on folklore of the Soucouyant. her origins are obscure, but in present day she poses as the CEO of a resort in the Bahamas