Seriously awe-inspiring work with the shading and gradients! I've done a lot of pixel work myself, never anything NEARLY this spectacular, but your shading on both the gradual and the finely highlighted shapes is GORGEOUSLY rendered, and you should be very proud~
I'm pretty amazed at the range of color you've managed to imply with such a limited palette! Awesome work, and congrats on the DD! Have a nice day~ And thanks for teaching me the phrase "crepuscular rays," haha.