This is beautiful to look at and I've been gladly doing just that for several minutes now. I find the red/orange brown really adds a nice and cozy mood which fits very well with the otherwise picturesque structures. Now, you're obviously more experienced than me when it comes to drawing digital landscapes, but I'll gladly offer my 2 cents for what it's worth. Two things that caught my eye. One, the dark areas on the edges; These appear pitch black, and although I use too much dark values myself, I was told to almost never go so dark that it turns black altogether. I wonder if keeping it a very dark brown perhaps would prevent pulling focus from the lovely center? Because all that black certainly makes me wonder what's hiding in there; my first thought was a pirate's cove on the left, yarr! Second, The left area of the lake above the waterfall. This seems to be an ancient place, almost as old as time itself. The round mountains and hills seems to have been whittled down over millions and millions of years from rough weather, yet the water has only carved one small path of escape from the lake/river. It would seem to me, that if water flows so far left of the only waterfall and so close to the edge of the cliff, that erosion would have eventually carved a second path of escape. Especially because there is a lot of soil on that side, judging from all the bush and jungle hanging from the side. An easy 'fix' here would be to just remove that little water "tail" on the far left, as that is what seems to scratch my eye the most .
All in all, a stunning and memorable drawing that puts absolutely no shame on your artistic skills; quite the opposite in fact.
You should be happy. I want a place like this for my hide away. Send me there JJ. If this is as close as I can get to this surreal place, well, I am happy with that. Great creativity, great imagination, and a great drawing! I enjoy your work. Keep sending it out for us.