I’m never a fan of overlapping nuva shoulders for chests :/
The rest of the moc look okay but I suggest getting rid of 1 shade of blue, I think 3 is to many.
Also any moc that can incorporate Ben 10 pieces without looking terrible get’s my like
Nice to see a lightsaber rod getting some use, though it does look a little weird coming off the tip of the hand piece. I also really like the overall silhouette with the wings, as well as the hip skirt things. Really nice work overall.
The crest connection is actually non purist (though that makes it cleaner from the back.) . I found a sawed in half minifig light saber I used to connect that