My Film Opening Idea

I have a few ideas for a Thriller opening and the way some shots can be set up.

I want to start it off by fading into a dark alleyway  following a person whose carrying their shopping, the bags are rustling and that's all you hear at first, then the camera changes to a CCTV view from above, you still don't see the persons face as they are walking away from the camera, the titles will be running in a conventional order along the bottom.Then we will have close ups of the shopping bags moving as they walk and rustling. We will then have a shot in front of the person and we will see a dark figure lurk behind, we will then cut back to CCTV and show the dark figure catching up to the person, getting really close, then cut to an over the shoulder shot of the lurker right behind the victim, the camera will move in the same rhythm as the lurker to show their significance.

We will see a close up of the lurker lift something, that looks like a pole above the victims head and then whack it down, the screen will go black just before impact and all you'll hear is a thud and the noise of the shopping bags fall to the ground and groceries rolling on the floor in panic.

The some eerie music will start to softly play as the camera shows a close up of the disturbed shopping bags and shopping on the floor, then a dramatic close up of the victims face and blood on the floor and their eyes open piercing into the camera lens, then the screen will go black again and the title of the film will appear unconventionally and the film will start.