This is rare but would love to see this be done. 2 girls dressed up gothic in office/secretary wear, maybe with thick black framed glasses. Must have long tongues and now how to use it. Piercings. Slowly seducing each other by strip teasing and lip licking.
Or they can be dressed as 2 very vampires, in like long black skirts or dresses (not tight sleezy ones) but flowy and sophisticated look.
Both are in a dark environment, maybe shoot with night vision mode on to give it that erotic feel to the scene. Girls would both have black straight hair. I find dark hair truly sexy on girls. Maybe wigs if must needed.
Maybe have one girl dominate and the other one submissive. The dominate girl would start off by slowly approaching the other girl and teasing her with the tongue and slowly showing off whats underneath her dress or skirt. and then they both embrace in erotic kissing with both long tongues well exposed. I like to see scenes when you can both see the tongues on each of the girl. I don't like french kiss because you cant even see the tongues. but like maybe just both their heads far apart so that the tip of their tongues can touch each other. and then the submissive girl will start getting really into it and then before you know it we've reached the peak or climax of the scene in the middle when both girls are crazy for each other and super horny. Both will have this very erotic seductive look, with an evil grin/smile, and then continute kissing, and licking by maybe taking one girl and pushing her onto a bed andgettin on top of the other and start making out again. I love when a girl fully extends her tongue all the way out before engaging in a kiss. That makes it look so erotic.
Here's an example of what I'm talking about. You can use this video as sort of a guideline. I think a horror-kissing theme would be great. Cause its different and new. and I'm sure once its done right. People will love it.
Take a look at this video clip.
http://www.youtube.com/v/YgBv5Xz-KSE&hl=en&fs=1
To me, what makes a good video, is 2 girls with long tongues and know how to use them and arent afraid to show it off. and also dressed really sexy and sophisticated (not sleezy mini skirt and cheap look).