Oh, Rina, don't misunderstand Borhani, he's a great guy, but he really speaks not only no English, but also has a very unique sense of humor. Knowing what he does, I'm sure he's actually expressing his respect with this!
I think, maybe he might have meant:"Come back to earth!" in the sense that it's so authentic that he suggests to suspect you were actually on Mars to do that painting!
I know, it takes years of experience to translate that small comment into this explanation, hahaha, but I do believe it is true!
Also, you're already part of the family, Rina, no escaping that!