That is a huge improvement you've made already, but you could take it even further:

What I changed:
I fiddled around with the eyes, saved a couple colors there by reusing some of the blues.
Changed the brightest white to a brighter yellow.
Added some highlights and more contrast on the body, to make it look a little more jelly-like. I don't know if that was what you were aiming for but it was what I saw.
Shaded the lips a little to add more bepth and reused a couple of colors there.
Added a little bit more detail to the door.
Changed the teeth to look less like stripes, and more like teeth.
Anyway, good work, keep at it!