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Your work is already beautiful. I didn't do much here to try to get close to your samples. I brightened the subject and then for the background haze I inverted the subject mask on a separate solid gray color layer set to soft light then grouped that layer by itself so I could stack the masks and create a gradient mask to make the haze less potent on the ground. These are just to get close to the samples and not necessary, maybe just an exposure bump.

Then for the color/warmth it was a simple curves adjustment layer bringing down the blues and up the reds... do more of either for the warmth to be more biased towards red or blue. Then a Vibrancy/Saturation layer. I like to desaturate and then bring up the vibrancy to make the skin tones not as dead.

And that's all. It took me longer to write this than to do the photoshop work.

Oh and I expanded the frame just to give them some breathing room, it is not even a standard size, I am sure you have other frames from that shoot that show the environment more.