It looks very nice as is. Truly! But I know when I ask for feedback, it's because I want suggestions not just for someone to tell me it's perfect as is. You could leave it & it's still a wonderful quilt. If you are asking because you want to change something, here's what I'd consider:
1) Add a second layer of the fringe fabric that isn't cut straight (the edge of the cabana isn't straight, it is cut in at angles, but more importantly, to give it depth, the right hand side after the post angles straight upward. That would help to represent the angle more realistically. I would try to tuck that under the existing fringe.
2) Adding in some shadowing would also help a bit. You can do that with applique, but it's not easy. A simpler way would be to use either ink (Inktense pencils or blocks) or fabric paint. Or if you're good at FMQ, you could add shadows with thread painting by using a dark brown thread & maybe a lighter brown/tan thread for the highlighting.
That said, you did a really nice job & if you don't do another thing to it, it still looks really nice.