It's time for me to brag.

My Tervigon conversion is extremely close to the real thing.

Here's mine:



And here's the GW one:



Pretty close if I do say so myself!  Notice the Termagant coming out of the birthing sac, the spines and the fact that it's walking on its claws.  I also almost used the Carnifex head with the tongue.  Granted, I used the codex artwork as my inspiration, but I think I did pretty well for myself.

The differences are the height of the legs and the sheer size of the birthing sacs.  On mine, I enlarged the belly but this one is just Octomom massive.  Mine will also have an easier time getting a cover save.

Here's the link to the original post where you can see different angles of my Tervigon.

/shameless boasting