Looks pretty good.
Why doesn't the headlight sanding seem "intelligent"? It works! You are using very high grit sandpaper (1000 +) and really only taking the damaged (yellowed) layer off.
I know there are many that swear by this method. I've done it a few times myself, works great!
I doubt there is much you can do for that wheel cover. Probably best just to replace it, if it bothers you. Check out a junkyard, or ebay...
Good luck!