Think I might tweak a few things around the back, but this is pretty much done. I'm pretty sure it's still kinda crooked, but there's a limit to how much I'm willing to fight with Outfit Studio's movement controls. It also uses entirely too many separate parts, 46 on this build. One of these days I really ought to figure out how to merge meshes. 

The basic shape with the five 'horns' was the initial idea, which inspired the 'Aster' name, which in turn inspired slapping all the lights on it. I'd kind of like to have it add an offensive power, like how the Visage of Mzund in Dragonborn does (except, y'know, less sucky), perhaps something using the light ray from the Meridia quest as a projectile. But first I'll have to learn both how to build a unique spell and how to get it added by an armor piece like that. I think the only way is scripting, which opens up even more stuff for me to figure out...