I haven't finished watching it yet, but my critique on a screen quality level is that it looks pretty good, but any advantage created by the HDR post is being somewhat lost because of contrast being too high. There's a lot of crushed black here in the final encode, and HDR really excels at creating smooth gradients, which are lost in high contrast. It's not the technical specs that bothered me though, as I looked at different scenes. It's the way the color was orchestrated, rather than the delivery of the color.
This isn't intended to be negative, just constructive critisizm, so I'll show you exactly what I'm talking about. Here's actionable information that you can use in the design of your next film, that will instantly give you a stronger overall look.
Use the composition guides for color WHILE you are designing sets and framing shots. You cannot fix this in post, it has to be done on set, and then polished and enhanced in post. It's easier than it sounds.
Now that you've seen this formula, you'll be shocked at how many films manage to nail this ratio almost every time. Star wars movies, or James Wan's horror films, or almost any high budget film or tv show typically sticks pretty close to this formula.
Master this one technique, and your next film will look twice as good. Not saying that this one is bad, just showing you how you might consider improving future endeavors.