This is a sad yet wonderful picture! I love how it shows all the stages they went through, including early childhood, childhood, early adolescence, adolescence, early adulthood, adulthood, late adulthood, middle aged and late aged, but after that is saddest, with Katara standing alone and almost wishing that her brother was back.
That is how sad and impacting life and death is. Also how tragic it is with no one really knowing what comes next.
I hope you keep making these because so far, it is PERFECT! Smooth transitions, good colours and awesome drawing! Keep up the awesome, great work!