your colering is amazing. I am not sure if its traced or your just so good an artist. and if this just is an example and you wont sell anything traced
but copyright matiriel is against the rules to use. and you can get people in trouble. so please be carefull what you offer to make for people. I doubt you wanna be the reason someone had there story deleted from the app.
I do recoman to read this forum, it explains better, what you and can not do regarding tracing, and refrence
Episode Explained: Art and References - Creator’s Corner / Episode Explained - Episode Forums (episodeinteractive.com)