This was a hard decision to do. On one hand, the main ground, the grass, the wooden structures, water and the bricks looks very good or decent, at least. On the other side, the spikes need a bit more of work. And the shading of the trees and hills is pillowshaded and could benefit of a lighting source. The vines could be better too.
Overall, I decided to approve because it has potential to be even better and was a very nice first attempt. Consider thinking of updating this graphic in the future. It can be even better, but overall, good job.