Hi, and thank you for your entry.
I like the tree, especially that you drew changes in the brightness values on the edges of the tree trunk. Looks abstract and lovely.
My two suggestions are:

1. The branches with leaves are side by side and look a bit flat. It is important to draw them overlapping each other for a sense of depth.
2. The Coconuts are empty, with no values.

Other than that, good job.