Again, slightly underexposed here, as Dennis points out. As you gain more experience processing RAW files you will easily be able to add contrast and saturation to bring more 'life' into this image.
Composition is great here. One little thing - the branches creeping into the bottom left corner are a little distracting. Its only a small thing, but these little details can make big differences. From memory, it would have been difficult to obsure this branch on location (without falling over the cliff!!), but that leaves you with two options in post processing. If you were comfortable to clone it out then you could try that. Alternatively crop some of the left of the image off, which would also remove the black vignetted corner. You could also do the same on the right to remove the vignetting in the top right and make a pleasing squarish crop.
Hope this helps,