I love your version of Cthulhu!!! You're take on it is so alien and different, but still keeps to the basic description that Lovecraft writes about. Most people just put an octopus on top of an orgre's body and add some wings and call it a day. You've created something completely foreign and alien looking that it tops other versions I've come across. Fantastic!
in the story, the sculpture of the dreaded cthulhu is said to "represent a monster of vaguely anthropoid outline" so that probably where the crustacean part came from. Nicely done IRIRIV! diffrent from that same old-same old octopushead!
The first illustration of Cthulhu I've seen which is not unwittingly funny. Your design really catches the maddening horror of great cthulhu. Breathtaking.