The Buizeru (normal pose) is also very good! It's very well done, though again, your shading needs some work;
on the leg on the left, the highlighted spot shout be smaller- once it's make smaller, move it over more to the left. Also make sure it stays tall and not too wide or you'll ruin the shape of the surface.
Once again, the shading on the head isn't really round enough- try to make it more rounded and more smooth, especially the shadow on the yellow muzzle (should go further to the left and a bit bigger). Also, some of the shadows on the head don't make sense- you have a shadow on the orange fur higher up, but it doesn't continue on the yellow fur! Watch out for that, as your shadows MUST remain constant.
Other than the shading, it's very good!
Nice job on the backsprite as well! But again, shading is a bit meh.
On the gold band around its neck the shading doesn't quite work out. On the second-lightest shade of yellow, the curve goes all weird. The lightest shade shouldn't go down so low, though it's long enough. Also, there should be a tad bit more highlights on the head. The highlight just above the eyes should be more round to show the shape of the Pokémon's head.
But again, other than those small shading problems, it was pretty good!
I suggest you read through my posts properly and try to edit the sprites. Though they're good, they could be better so I advise you try and edit their shading in the ways I suggested. Goodness knows they should look better!
Good luck, and again, keep up the good work!
~Psychic