Thank you.  I did the upload wrong the first time so I might have missed the checkbox when I tried again.

We have added to the challenge because it seems you forgot to check the box for it.
If you did not want it in the challenge and only wanted to use the palette let us know here or by PM before deadline.
 

The sun is too big compared to the rocks and by making the clouds thiner on the edges and maybe even reduce the amount of clouds you may be able to make them look less stiff.

apart from that good job and nice shading