Hey! I edited your first post to include your sprite since you have to post your actual work here and not just link to it. I hope you don't mind!
Either way it's a cute sprite! A little basic, kinda simple, but not bad or anything. I'll second mew_nani here. I'd round out the shading a little bit, make it fit the shape of the Pokemon. That'll make it more organic feeling. :) Also you've got some jagged pixels on the right, just above the "end". Smoothing that out will help too.