Interesting piece, and an interesting notion as to the duality of the sides. The way God (?) is portrayed, he looks a bit like a businessman, which you could interpret as in: if we were made in his image, and this is what we've become, then he must have been what we are now long before our time: nothing more than a suited symbol of greed and ego! The underside seems to beg to our inner nature rather than the facade we put on, though whereas one holds an axe, the other holds a white flag, a symbol of surrender and peace (even if it is one of deceit)... and admittedly it does a bit brighter on the clouds than the fiery depths of the underworld too. :)
Interesting character design on the devil; his humanized traits. Palms of hands and chest a bit like that of a monkey, and though he wields a weapon, he doesn't look directly evil. The man in the suit however wields a sly smile even with his symbol of innocence. I wonder if the expressions are intentional that way, or just how I perceive them? In a way, the devil could be seen as a reflection, maybe in the pool of water the falls pour into. The divide feels natural, and I like how clouds and fire frame everything in, though would've been nice with more fire at the bottom, around the edges of the frame IMO. to complete the circle. Unless it really is a mirror! In which case the frame wouldn't be part of the reflection. An interesting piece overall; open to so many interpretations. The line work is basic, but smooth and refined, and coloring all fits in. Not sure the outer frame makes it better, but it does give the impression it could be a painting hanging on a wall; not just a digital image. Imaginative work!