I saw this being submitted to the critique folder on #TheEquineStudio so I hope you find these tips helpful hun.
First of all I love the originality in this piece, the concept on "mother nature" is really good. So kudos on that, keep the creativity up. Also, looking at your other pieces in comparison I'd say your cutting has improved.
First thing that you should work on is placement. Do you see how "busy" this image is? You could probably loose the wolf, without the wolf you make people focus on the horse and the girl. Also, practice blending your hooves to the ground better. At the moment it just looks like the horse if floating. Try using the "clone" tools on a low opacity and burn the hooves more.
Another part you can work on is hair painting. Your doing well with this already, what I suggest is work in some smaller and larger strands. Add in some strands that arn't straight too, when you look at a horses mane/tail it isn't perfectly straight, right? So add in some wiggly strands.
Hope this is useful for you. Keep up the improvements.
Very beautiful piece of artwork and nicely put together. I particularly love the work you've done on the model's hair and the horses mane, really an expert job. A bit on the critique side though, I see several places around the model that need a bit of attention with a cutting/erasing tool to refine them.
Overall, good work And thanks much for choosing my stock, this fits well with your theme.