It looks a little too liquid for lava. Maybe slowing it down would help?

Thank you, I'll try.

I originally limited it to only two colours to try to get rid of my habit of anti-aliasing everything whether it was necessary or not, but I suppose you're right.

I wouldn't say it's fantastic, I've still far to go before I can say that about any of my works, but thank you; I am quite flattered.

Thank you.

Do you have any suggestions for improving it without increasing the number of colours? I considered adding some texture or dithering, but felt that would make it look too busy. I could be wrong about that, though.

It doesn't look finished. Did you mean to make the legs that jagged?