I like your forests a lot, it's a really cool style. Mountains look good too. There's an inconsistency though: the trees are seen from the side, and the mountains from above. Also, the trees are very sharp, while the mountains are fuzzy. To me, these elements don't really match each other. As Viking says, removing the black lines could improve it, but I'd also suggest giving the mountains more, sharper detail and try to lower the perspective to make them fit together with the forests.