it's hard to tell from those pictures, but the exposed basecoat should be more dull and rough than the clearcoat...the problem is when a car is that bad...the clearcoat is pretty dull and rough. It looks to me that the center of the hood close to the base of the windshield is the patch that the clear is gone, there seems to be some gloss on the
headlight covers and in that area.
PS I don't know that sanding is really going to do anything for you, if you are going to do it, try a small spot first. Also I think 1000 is a bit aggressive...if it was good paint that you were trying to level out a defect you *might* start with that but you'd finish with something finer.