Hi, playing with cycles and this is something I came up with. first render at 99 samples
biggest thing you could do to change the scene is to do something about the grey background. It takes away from your scene. The rock itself actually looks pretty good, lots of detail etc. It’s just a bit empty atm though. Would be good to show the lava hitting the side of the rocks, small spark like particles, some atmospheric fog and stuff. There is a lot you can do with this. But good work so far 