Ah, great to see this one posted! I was watching the livestream process for a bit and it's always exciting to see such detailed pieces in the making.

This piece has such a gorgeous composition and angle! I'm really liking that tail especially, it creates such a nice motion. The lights are also beautiful, and you've done very nicely with the crystals.

One critique I would give is the use of a scaly texture overlaid like that. It's a decent method and all but here it kinda pops out in a, well, very overlayed manner. My advice for better integrating such textures would be hand-painting some of the details in. It doesn't have to be much and I think it's most effective when done in places that are well-lit. Like for example the dragon's shoulders. You can basically just hand-paint over some of the scales and the same wonderful, detailed brushwork you have here remains more consistent thorough the piece. Alternatively you can also play with the opacity of the scale texture by having it appear stronger in places of light and from faint to basically invisible in more shadowy areas.

Other than that, really gorgeous piece with a very nice colour scheme and flow!