Perportion wize, visual aspect wize and concept wize, this new pic is awesome! however, it took me a little while, but your mouth is actually where the nose is supposed to be. from my book, it says that chibi noses are only drawn using the \ part of the < nose. Although your style doesn't have a nose, you need to respect the nose placement...
This redline is underimposed on your work to show you how much down I would bring the mouth.. it's done in ms paint, so pardon the crappiness.
like I said, nose is optional, but how I draw noseless people is by actually drawing the nose lightly at first, then errasing it later. hope this helps.