Can I ask what is the blue halo ?
Your computer screen - this is a B&W image.
What I did do is added a touch of a motion blur filter to each of the four images, more less normal to the direction of motion of each shot, in this composite to make the image look a bit less static. I initially tried to do it in-camera, but had no success, so I added it in post.
Manfred - An interesting experiment but it doesn't work for me. The added "movement blur" does not look natural at all. I like the silhouettes of the cleaver but would like to see more details in the hand that swings it. I also think that the top cleaver shouldn't be truncated by the frame.
FWIW
I think you could possibly add a lot more motion blur to each image before combining and then blending judiciously.