This is eye-catching and the curved foreground is awesome. The flip is well done! I think the bright light on the deer with the sun behind them makes it feel a bit unreal. They also seem to be on top of the grasses more than walking in the grasses. But I like this for the glow and the composition and maybe a bit of stretching the real into hyper-real that creating art allows!
I particularly like the sky. With a little clone stamp and patch tool work the landscape flip could be made realistic. ( That may not be your goal. ) The deer need more work. Nancy summed up the problems.