I fail at doing simple things in pixels. And yet you manage to squeeze detail and anatomy features into yours. That's what I love about yours. They've got shading, colours, anatomy details, details in general on spines and spikes and stuff, and awesome poses.
Well done! I would love to see a tut on stuff like that.
I remember it was super hard myself, but learning pixelart has made me learn even more stuff with other art, so its a good thing to practice on since pixeling isnt the same as drawing. You control each pixel instead of the image, and then each pixel somehow make up your picture, to me it feels like reversed drawing for some reason xDD that made absolutely no sence..