(After she stating that it was inspired on LOZ, and truly, doing such a comparison so rudely stated deserves no applause. They're not rips, although they bear similarity. But please, the similarity--the grass--is almost a green square. I've sprited many green squares in my life, so witchhunt me, too.)
I, for one, like the trees. Although they look a bit too organic (which isn't really a bad thing at all!--But in this particular style, it should matter.), they could still pass off as cute trees if you lighten up the shades that define the square-shaped bushes. The problem with doing something that's not truly symmetric is that you'll have to do other trees with different "tumour" (bush) arrangements to grant its style verosimilitude. Other than that, the roots are the only thing that bothers me. Maybe, should you make the trunk-length bigger (and thus letting us see further trunk), it'll do it more justice. Otherwise, you could just as well remove half their presence and shade them with dark brown and we wouldn't notice them as much. If the latter appeals you, perhaps, too, add small roots coming out and in again from the ground, farther away from the tree.
