I don't think this can qualify as an actual entry, because 1) - I did these pictures last year, and 2) - they aren't particularly earth-themed, apart from the subjects being animals. (And the second picture isn't even a depiction of a real animal, it's a picture of a famous mechanical animal stand-in.) But, this is as good an excuse as any to post them anyway.
First up, Portrait of Illuminati, in charcoal:
And next, Portrait of Bruce, also in charcoal:
