no, no, not saying you took someone else's drawing and made a vector of it, it's just that I'm not aware that you can actually have blending in vector art (as far as I know, I can't do it in illustrator, maybe I just haven't found the tool or option for it yet)
as I understand it vector art is similar to any other artwork but it's made with lines instead of pixels, certain programs have it (adobe illustrator off the top of my head), the up sides are no matter how much you zoom in or out it won't get blurry, it is also more compressed then an image made with pixels are. The down sides for it would be that you can't smudge colours, all of them have hard edges, nor do you get a good blend normally since they are lines and vectors generally contain less colour variations when pixels do. Or do I have the wrong understanding of what a vector is?
It's a mixture of photoshop and illustrator, if that's what you're asking.
Essentially the core difference is just vectors are designed via paths which are held together via splines with mathematical relationships to preserve their proportions, so they're dimensionless. Meanwhile raster images are just a collection of pixels, with an RBG value in each cell.
This is absolutely beautiful! I love Luna's armor, and all of the soothing, cool blue colors that show the viewer there's nothing to fear while sleeping, for she's there to protect. I'll surely use this as a wallpaper. Great work!