Hi Giovanni. I love the dust being kicked up as well as the hints of motion blur in places, really adds a dynamic element to the shot. The high contrast look also works well.
Overall details look very smooth - so I am not sure if you dragged the clarity slider down a lot in RAW conversion, or if you ran noise reduction all over?
I would crop a bit from the top so that the tree trunk top left gets removed.
Just the right amount of S/S here Giovanni, with the hoof blur and subsequent dust kicked up, would also go for cropping out the tree base as well.
Nice action!
Morkel & Marc said it all. The contrast is a bit too high for my personal liking (bordering on an unnatural feel) but that's perhaps just me. Nice action shot!