Drafting and planning - Flashing camera scene

In my film Trailer, one key scene is when Lucifer walks up to camera with flashes of light on him. I originally thought that instead of having to use extrinsic flashes of lighting, i could use flashing picture of him getting closer to the camera shown below.

I felt this effect did not work properly and i couldn't make the effect any better. Instead i decided to record Lucifer walking towards the camera with flashes of light on him which is shown below.

I felt this was a lot better that the original but still required lots of editing onto the process. Below is one of my final drafts as i have slowed down the video, added music and created an effect that gives it a scary horror feel to it.