This is so pretty! I really like the atmosphere. The combo of the marker-like brush strokes and the tiny sketchy marks makes for an interesting texture.

 Changing the facial markings to hearts is a neat idea. I bet someone could make a really cute puffin OC/fursona with this in mind.

We have puffins around where I live; you can take boat tours to see them in the wild. They're such funny little guys, I like them a lot.