Just got done re-doing this cover...for a second time. I didn't like the coloring on the "revamp" and fixed some proportion/face issues. She looks a little older, too, which is good. Kanna's 14, soon to be 15 when the story starts, but in the future (where we'll get eventually) she's 18.
5/14/20 edit:
Image uploaded with official comic branding and actual LEGIBLE text. Thanks to Eaton Pie (who has disappeared from Comic Fury) for this suggestion. It was tough love, but in this case very helpful advice!