Auto-translated
Judging by the screenshots, there are some interesting ideas 😊👍. However, I suggest paying attention to the following points:
1. Many details are blurred. In this case, the point of using high-resolution textures is lost; you could create a more detailed image even with 1k textures and mipmaps.
2. The color saturation is too high, and it looks unnatural. In reality, the most vibrant colors do not exceed 80% saturation, unless they are luminous materials or "acidic" types of plastic/synthetics.
If this helps with color selection, I can share a palette that I created for myself to avoid overthinking it.