Latest Idea for movie

I have decided to do a opening scene with alot of suspense without much action and is relativley slow. It is going to involve clues to what the main movie is about and encourages the viewer to potentially take a greater interest in the plot of the movie. One idea is the dropping of (fake) blood into a bathroom sink and then some sort of weapon is then cleaned off blood within the sink and again more blood is falling into the sink. Then another idea is quick shots of photos of people then the next quick picture the picture burning. Also, one key bit which is going to be the end of the movie is, a slow motion shot of a white mask and then there is another shot of a man with the mask on, looking directly into the camera.