I think that sometimes when you struggle to find the right 'look' for an image and scratch around in photoshop trying to find something to really latch onto style-wise, the problem can be that, even on a subconscious level, you're not as happy with the image as you might be. In the first picture the air conditioner spoils it for me. In the second the metal bracket to the left of the gate is distracting and it all seems a bit busy to me. Both shots to my mind are near misses and although playing with PS settings is good practice, I've often found that if the image itself isn't quite there, it's very easy to get bogged down in the post production side. I think there is certainly something to be built on stylistically, and this theme is worth pursuing, but I would go and improve on these shots as I'm sure you can, and then come back to this problem, the stronger the pictures are the easier you'll find this part of the process.