Finally, the finished version :
Honestly, looking at the overall this seems deviated much from the original version, and might be somewhat hard to relate to it due to entirely different setting (an RTS in-game screen vs cinematic render). Might still be tweaking some small things, but not too much.
Nevertheless, it has been a great experience, and got some new knowledge to apply especially for tweaking in Sketchfab environment that I can use later on. It was a blast too seeing the other entries which are top-notch quality and on another higher level compared to this, enjoyed reading their journey and watching the award-winning realtime models. Thanks to Blender Artist, BlenderNation and Sketchfab for hosting this challenge and good luck to the participants !