Here is Pokémon Quartz, if you're still looking for it:
http://www.pokecommunity.com/showthread.php?t=64133
I can't verify if they're really using your sprite, though.
Now... I'll take them all in order, left to right, top to bottom, and give some quick crits:
1. Looks very cute, but the shading is giving me the impression that it has a really twisted body, with its arms at a completely different angle from the legs. o_O Also, there seem to be some random black pixels at the top of the head.
2. Very nice and cute.
3. Good too.
4. The head seems a bit too big for the body - I know it's supposed to be big, but it just seems odd. Also, the side of its face looks a little pointed.
5. Might want to make the tail more in the style of the wispy parts on the paws and ears... right now it stands out a bit oddly.
6. I really like this one - just don't ever use monocolor outlines. Give some shading to the outlines on the white parts and re-shade the head - at the moment the head shading looks wrong.
7. Too Meganium-like... You could have at least given the petals around the neck a different pattern. Also add some outline shading to the tail bud.
8. The shading on this one is too light. You need to use some darker shades on it. Also watch out for mismatched light sources...
9. Ooh, that thing is really cute. Use darker shading on the outline on the bottom of the chin, though, and give the head some highlighting.
10. I like this one too, but give the outlines some lighter shading on the belly.
11. The form could really have a smoother shape. Also, the head is very strangely shaded.
12. Again, smoothen the form. Give the body some highlighting.
13. Smoothen shape and add more highlighting to the outlines.
14. This one is really well done. I don't really have anything to say about it. Well, except that the fin behind it looks a lot different from the other fin in position and shape.
15. Good, but give it more sensible outline shading. The outlines on the legs are shaded lighter than those on the head, which really doesn't make sense. The shading on this one is also a bit too light.
16. Okay, this thing is just strange. But yet again, try to shade the outlines more sensibly and give it some highlighting.
Overall, they're pretty nice but there is room for improvement, especially on the outlining. Remember, you're shading the outlines, not just adding lighter parts to them in random places.
