"Hello you Human, I am Zib Zob and I am from Marz. I have been learning about Humans and How they wright. Zib Zob X"
It's interesting to see that some of the words in Martian are spelt differently to Human :). Interestingly, on the other side of the paper, there was another signature by what looks like a human - Hollie Wade, and I suspect there were at least two humans accompanying Zib Zob, as there was also a second note, from a human (or maybe they are Martian girls!):