Hi all!
This section was enjoyable and really challenging (most 'cause I always want to do something personal, and I don’t stop until it satisfies me a bit).
I’m still not totally happy with the denoising of the light, it really makes a weird effect.
Btw here it is:
You did a great job! 
That is because the calculations (algorithm) have always the same out come.
There is the randomize option somewhere. To force the denoiser using a different base each time.
Woah nice, I’m going to look for it right now! Thank you!
Ok I’ve not found the randomize option, but I achieved a not bad result by the composite tab:
then rendering the animation by png and then video editing all.
That’s the result:
? I’m using 2.91.0
Ooooh that’s why! I’m using 2.81, for the new section of the course I think I will update so.
