These need... something

[jc77]

I've only been playing with textures for a little while now, but these "need" something... What?

[ticktock01]

These are nice manipulations.
It must have been a nightmare to separate the horses mane and tail hair from the background.
In the first shot I think there needs to be more clarity between the main subject and the background. You can achieve this by slightly sharpening the main subject and perhaps brightening her and the horse a bit, and then desaturating the background a bit.

In the second shot I think you have good clarity between main subject and background, but there is some dark haloing around the rider and the rear part of the horse, which gives it a bit of a pasted on look.
Hope this helps.

I think both can be fixed with a little more post-processing.