This is definitely an improvement over that earlier piece. But I can't help but feel that the angle and texture of the gas giant in the original is a little more...interesting, for lack of a better word.
A clear improvement can be seen. XD But would the dark side be SO dark as to be invisble from so close? Aside from the ring moving behind the planet, I can see no indication that that world could be like the Death Star (Half built)
It's pretty much like a day moon. The night side will only be as dark as the rest of space, so it will appear as the sky does. An illuminated atmosphere just screens out whatever light that doesn't exceed its own emissivity, so it appears invisible. Like a day moon.
That's an illusion. You see part of a circle, but your brain wants to complete it. Besides, as far as it is from Earth, there isn't enough backlighting from Earth to exceed the sky's brightness (unless you're directly behind the moon, which can still only be visible during the late evening.)