Those clouds and shadows look really nice but this yellow thing on bottom left corner isn't so great. Somebody likes it of course, but I personally don't. I'll give it eight points.

That "yellow thing" is called a wing

Nice photo. I really like the way the shadows of the clouds show up below. It is not something you think about when you are on the ground. Maybe the previous viewer would like the "yellow thing" better if you painted the plane pink or purple.

Hopping on the "yellow thing" band wagon, I'd say it gives a reference point.