YES I love watercolor painting. I suck at it so I get easily discouraged, but I'm happy to see that I'm not the only one, at least :<
You need more clothing folds, for sure-- Cirno's waist shouldn't be so unruffled, and her shoulders need to look like they're bending. Her arms look a little too short, even for her small stature. And her neck is a bit too... what's the word? Broad? Thick, maybe.