I like the pose and the jet-black skin
Only things I would nitpick on would be to drill the barrel.
And take a thin brush and gently put wash in the finger-joints ect of the powerfist then edge highlight it.
I glaze my Salamanders with "waywatcher green" that i feel tones the highlights down nicely
Hope some of this is usefull to you.
Cheers on a stellar Salamander! FOR VULKAN!!!