Very nice work. I would be proud of it, as is.
From an artistic-message point of view, though, I think a prolific scene such as you’ve created invites a narrative told through some non-obvious component that takes the viewer just a moment to catch and to appreciate. Done right, it has the effect of making the art work a lot more compelling. I do not for a moment assume that you need me to tell you that. Just having fun here, at your invitation.
“Heart of the Jungle…” Jungles are all about life, are they not? And “life” is a very precarious and sometimes violent state of things. Without beginning or end, the reptile gives us a great place to jump into the middle of the jungle story. While it can be plenty to observe a reptile like this one just relaxing on the tree branch gazing nowhere in particular into the lush scene, I feel tempted to include, say, two other active components. I see the same reptile with its gaze fixed on an obvious predatory target - say, an insect or some such. Lurking beneath the water or in the plants or shadows, however, close inspection reveals another actor scoping-out our reptile with similar prospects. It could be almost anything. A bird of prey. A giant insect. The peering eye and nostrils of a much larger reptile. A pair of talons or claws entering the scene. Some fanciful, carnivorous plant. Just small visible portion of an immense, tracked vehicle in the distance, approaching under the command of the most destructive of all predators to wreak havoc upon the jungle heart itself. Twists like these, artfully and subtlety introduced, promote a beautiful static image like the current scene to something more than can be achieved by skill alone: a story, a message.