Not bad, but it looks a little blotchy and there’s a little too much contrast between the light and the dark IMHO. Kinda looks like you drove a bunch of wet salty cars to the parking lot and now the salt has dried. Pretty good though, you’re on the right track.
Depending on the look you are going for, maybe smudge some of the colours to reduce the contrast, maybe add some oil spots and tire marks?
Keep up the good work!
