If you have a costume of a Dracula or a Vampire and still you cant be feeling like one. Maybe you Vampire accessories are not enough. You can choose your Dracula accessories suggested below.
Dracula's Talisman, Where he get his power source beside drinking blood
Dracula charm can be pinned on polo or coat
Obviously you cant be a vampire without a Cape. You can have improvised.
To make it more reality, you can wear contact lenses colored red. If shows that you are thirst of drinking blood.
Fake blood of course. you can use it beside you mouth lower part.
The false fang, its very cheep.
Very scary gloves. Imaging your self holding or shaking hand someone with this hand, a very effective way to scare.
Vampire's Ring
Red shaded, Eye glasses.
The Staff. Some wizard like vampires are mostly have a staff
This is a complete set of Vampire costume, it's kinda expensive for a one time occasion but you can rent, or even improvise.