This was so adorable it caused my jaw to drop to the ground, unfortunately I also fell out of my chair, and the force of my jaw dropping caused it to fly through my roof and land about a mile and a half away, leaving a rainbow trail behind it. When I followed the rainbow, I forgot to leave behind something I could follow back, so before too long I got lost, so I decided to just keep following the rainbow. When I reached the end, and found a pot of gold right where the rainbow hit the ground. Which unfortunately caused me to fall down and my jaw to shoot into the air again, creating another rainbow trail, which I followed back to my home to type this up.
Your humans. They are getting better! :> You may want to be wary of putting lighter and darker lines next to each other. Having a lighter shade of blue(indigo?) for the bunny would fit with Fluttershy's lines. But that's just my two cents.