In particular, the left arm seems too big and the right arm feels too small, even for a gun. And it's always been much too expensive for me. However, when I saw a rather battered Glottkin on Ebay for a reasonable amount, I bought it and got to work.
I hacked off the weird mouth-lamprey-thing from his right arm, which I intended to use as the mount for a thermal cannon left over from my knight titan. Then, having made a good start, I chopped off his left arm and shoved it up his bum. The join was covered with DAS clay and green stuff, and the big tentacle made a nice tail. And by nice, I mean revolting.
Then it was time for a bit of an experiment. I'd seen the new GW contrast paints as a good way of covering large areas. The Glottkin is big and very warty, which would hopefully be good for the paint to take hold. So I sprayed him white and got to work with a pot of Blood Angel Red.
Hmm, not bad, if a bit like strawberry jam. Obviously, it'll need some extra work, but the basic effect is quite "nice", by which I mean that he looks like the rotting love-child of an Imperial Knight and a randy squig.
He then got a gun emplacement on his back, again courtesy of the knight kit. This bit is an icarus autocannon.
Here's a rather washed-out picture of current progress, together with a delightful pink stomach. This is what happens when the chaos gods make jelly!