fantastic ^_^ i see you've taken notice of my advice. the sketchy-ish look of the '60' opacity pen makes it look nicer, but theres still something missing... hmm... oh yes, you need layers!
layer 1 should be your background ONLY
layer 2 should be your lines (drawing without coloring)
layer 3 should be your coloring.
also make sure that you properly order your layers. layer 1 should be at the bottom of the layer list. on top of it should be layer 3. and finally, at the top, should be layer 2.
Your drawings are great and my tips are only meant to help you get even better ;D good luck C: looking forward to your next awesome picture!