Hm, they blend well enough. Masterful color choice once again. The shadows are going to need to be much larger. Also, the trunk to leaf ratio on the tree is a bit off. Add more leaves, make it larger and flufflier. Also, I noticed the tree is casting a shadow on the ground. Play with that. Add a silhouette in the shape of the leaves. I feel this would add a lot of great atmosphere to the piece.