Mh, you are probably right. But, being objective, and not from a perfectionist's eyes, there are quite a few dimples and dips in the top coat right now. How would I proceed here best? Is it the best to FILL these or sand the rest of it flat? I just don't really know.

I tried to polish it a little, but now it's a mixture of shiny and shitty. If there are tiny dust spots in the coat before polishing, they just become shiny dust spots, they are not polished away. Are you guys using some more aggressive way of polishing? Or what am I doing wrong?

I usually sand everything as flat an perfect as I can, then use Meguiar's cutting compound and then Meguiar's polish. I use a polishing pad that I mount on a drill.