Hm, strange. Does anything else look wrong like there are actual hazy, smeared streaks on the surface, or is the only problem that some spots just look darker than others?
It could be uneven application or (especially if you have streaking) applying too much product and not buffing it all off... Did you use different applicators and MF towels for each step? Just my guesses though, hopefully someone else will chime in too. :nixweiss
At worst you could try again, but maybe use less product, allow more drying time (if applicable), be more through/careful, and inspect it between each step.