Thank you very much everyone, wasnt expecting all these amazing comments! The crocodile head almost got thrown out but my girlfriend said NO... + my polkadot loach lives in the eye with the red tail shark, they spend a good 10 hours a day in there!
I have measured the tank up and have the wood ready but not yet painted, I will paint it back and see what it looks like, thanks for the idea.
Also about the moss on the crocodile head... Im currently trying to grow the stuff on my big piece of bogwood, if successful then ill take some off and grow it on the head as indeed that would look amazing!