i never got mine perfect, i got fed up and just did the best i could, the fitment on the front bumper is really hard, i remember i went back about 2-3 years later and started to raise the tops of the fenders again. our cars have Crazy curves in the sheet metal and it really throws your eyes you aim to get the gap like 1/8" in one dimension and then it is totally out when you see it from another angle. so you kind of Fudge it just trying to get it close. I must of opened and closed and adjusted the doors like 10,000 times and was never happy, but when i started the backs of my doors wouldn't even close on the B-pillar they stuck out like 1/2" and it was a week long struggle before i got the rear of the doors flush with the quarter panel. I thought i got it right until i put the fenders on, and it was like starting over. what i did notice was you could not work one piece at a time.
if you work without the hood in place you end up rolling the fenders in too much and the fronts of the doors get pinched in and then the hood won't close.
so i started with like one door and fender at a time and then i found out you pretty much have to bolt everything on the car loose and fudge around with everything as cause effect ripples around the fitment of the front sheet metal.
i was pretty fed up by the time i got to the front valance and trying to figure out how to get my front bumper to fit, i gave up on my passenger side as the fender might of been hit and the front rolled in so my drivers side looks ok the passenger side does not.