I really like how you've written Harry as a healer. It's not the most common occupation for him to take, but every time he's written as healer it always seems the most appropriate thing for him to do. I also like how you've written his magic and how it works with everything else as far as his control of it and how he uses it and what for, and so forth. Severus is excellent and I really enjoyed the banter back and forth between him and the other characters, Minerva and Harry especially.
The artwork is gorgeous. I love the use of the colours with the tan background; I also like the use of the reds and purples with Severus' cheeks and eyelids. It's quite life-like.