Mix wise, the piano sounds to far back in the mix where it gets lost in the over lushness of the backing.
I would also suggest that your post is just a tad to much like a plug for sales rather than a request for a constructive critical review, which is what this forum is really all about.
Best to keep your posts to a single link for such a review. If you want to indicate where peeps can buy your stuff a link in your signature to those locations is acceptable under the Code of Conduct for these forums.
Thanks for sharing.