On the 3rd one, did you blur the front guy yourself or did it come in a stock like that?
as I guessing you did blur him, instead of just doing filter>blur use the Lens Blur tool to create a more pleasing blur when something comes out that far, it takes a little bit to learn (set the shape to Octagon 8 for best looking blur).
What that does is blurs it like a camera lens would, it would get rid of small details a heck of a lot better then blur does which makes it less distracting and makes our eye go towards the focal even better. It's just more pleasing to the eye.

Favs are def the 2nd and 3rd one though. The last one just isn't getting me, I kinda want some black blacks in there because there are a few solid whites there. Also my eye doesn't really know where it wants to go, either the dwarf or the trees on the right. If you flipped the right side around, so the path in between the trees pointed towards the dwarf it would flow sooooo much better (your eye would follow the path to the dwarf instead of getting sucked back into it). But as I guess, you didn't make the background, or it's one big stock, so I won't hold it against ya, but so help me if I meet the creator.