OK, I really like the overall concept for this guy - he's huge and lumbering, which is what Nurgle should be, and he'll certainly make an imposing HQ for an army. I like the 'Tree-Man Terminator' idea enough that I might be tempted to try a similar one myself at some point just for the hell of it
Now, constructive criticism time.
The GS texturing is a bit too much of the same texture all over, which is a very easy thing to fall into (done it myself on many occasions). The 'tree' sticking out of his back works well, but the Nurgly bits over the rest of him are a bit too same-y; that said, I know it's your first real GS conversion work, so it's very good for that. I'd suggest varying the texturing a little more so there's a clearer suggestion of limbs etc. I'd also be tempted to go all the way and have segments of actual bark texture on his limbs in places, just to really nail the look; that would help delineate between the Terminator armour and the mutated bits on the figure as a whole.
It looks as though you've used the Nurgle Champion shoulderpad from the CSM Command sprue on the left shoulder; it's a nice 'pad but it's just not big enough for a Terminator. I would always advise Nurgling up a Terminator shoulderpad rather than trying to make a power-armour 'pad fit over Tactical Dreadnought armour; it's easier to Nurgle up a Terminator shoulderpad than it is to try and rebuild and reshape a whole shoulder area to make a smaller 'pad fit. I'm contemplating doing a comprehensive tutorial on all the different ways to Nurglify power armour at some point, and something like that is definitely one of the things I'd cover.
The left hand is a bit too much of a blob IMHO, even given the bark-like look you're going for on a lot of the body I think you should give more of an impression of a hand there to balance the overall look of the figure properly. As for the right hand, I have to say I'm not convinced by the sword, it's a bit 'Generic Chaos Weapon' if you know what I mean; for the neo-medieval look you have going on (which is always a great look for Nurgle, BTW - wait till you see the Plague Defiler I have planned) you could maybe try one of the big jagged cleavers from the Ogre sprue.
Being
super-picky, the globs of slime dripping off the Nurgle emblem aren't hanging down vertically as they should; either bend them to a perpendicular position or cut them off and replace them with GS'd slime and goo. It's a tiny detail, but it's surprising what a difference having hanging things like that at the correct angle can make to the look of a model; it seems to give a much better impression of weight and mass to the figure somehow.
I don't really feel I can give much feedback on painting, since my own painting is pretty mediocre, but I would suggest a brighter final highlight stage on the green fleshy bits and certainly more contrast on the armour. Currently the armour looks rather monotonous, and it could use some trim and colour variation.
Ehh; this much criticism probably sounds too negative, but I do like the look of him and it's all meant constructively. Have some rep for your first proper GS conversion - which looks good despite all my nitpicking - and get cracking on the next one :biggrin:
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