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Like the text on the scroll.  Nice effect.

 

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That's really impressive.

[Unliving Avatars]

Grim looking fellows!  Loved the whole set of photos.

[Dr Doom Stormcast test model]

The Latveria Warrior Chamber?

Looks great!

[First models painted! Hallowed Knight Liberators.]

Those are pretty awesome.

I think you have the right idea when it comes to dry brushing for the gradient.  There are advanced techniques like wet blending and glazing you could use, but a drybrushed transition works quite well.

I'd suggest not putting a bluish colour on the base rings.  It tends to take the focus off the model when its the same sort of colour.  A dark grey, brown on black would probably work better there.

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I like the clean black lines where the different parts meet.

[Oldblood vs Carmine Dragon @CanCon]

Capturing the building in the picture really shows how big these monsters are.  Often terrain is some strange realm gate or an odd forest and there's nothing concrete near the big stuff to really show it's size off.  Those monsters next to terrain we can relate to definitely makes the conflict look more epic.