Haven't posted anything in a while, so here's a new(ish) render...
dramatic shot.
Very nice. However, the star outline shouldn't be visible. A white glow should be all you see and given the (close) distance between the star and planet, half the screen would be white.
To increase realism, increase the distance between the objects and make the star glow more, a lot more.
my ยข50
Nice. How did you get those "lava cracks"? I'm hoping to do the same for another project I'm working on.