its a very well made figurine! its out of the box right? not self colored or commissioned.
looks like you've nailed down most of the shots. they look good, safe and bland.
i think theres too much light, too bright for something gothic and dark. try moving the light source quite close to the figure to create a shallow light. and maybe a kicker light to add separation from the background.
(or you might wanna try shooting with a bare flash from the side? it recreates the hard strobe lights from discos/gigs etc)
I was trying hard for the whole evening to play around with the lighting to get a nice shot but failed epically...but then at 5am in the morning (I couldn't sleep) I suddenly had a inspiration and got this photo . I think it's dark and evil and really contrasts with the above photos (where I was trying to make her look pretty and adorable)