These are both great! I especially like the second one, which I quickly gimped up and de-schnozzola'ed in the right a bit.
Thanks. Yeah, I normally shift them all to black and white, probably should for that first one too, but there is something attractive and warm to me about that old, yellow, paper look.
Beautiful. Man, don't get me started on sunken cities. I once proposed a computer game design where the world was slowly flooding and you had to replay earlier levels that you had run around as a diver.