This is an amazing picture in all the aspects. The way of handling a media as hard as watercolor, yet leaving some of the great original pencils to enforce the general feeling of the original traces is excellent.

The perspective and overall backgrounds are astounding, deep and rich.

Perhaps there are only a few points regarding dynamics, movement and graphical expression that we miss:

1) The mountains require a bit more of work or perhaps sharper traces to completely look "credible"
2) A bit more of shadows in the adequate perspective with a more complex light source would give it incredible richness (Here we see 12 o clock sun lighting only).
3) We find a gouache-like use of watercolor, which gives firm and nice looking areas of color, yet misses some of the advantages of the latter. Perhaps letting the media have more freedom over the paper in the closer subjects would give an even more artsy feeling to it.

Well, I am by far not as good as the author, (in fact...I feel poor, lol!) yet I thought these points may be useful. Any way I would pay my monthly wage to purchase this original and hang it at my living room!