I like the slightly pointy ears this artist does instead of exaggerated elf-ears many others go for.
Pointy ears are the right ears for vamp the elf ones i don't know if artists dose it on purpose or they don't rely know how a vamp ears are. Then again normally a vamp ears should not be pointy at all if we talk about classic western vamp stories as Dracula for ex the pointy ears all the time i think it is a japan thing.