I love the way the picture tells a story and how expressive the characters are! There's lots of movement, especially with the falling flower petals and the girl's hair blowing in the wind. I think it is a really pretty piece over all ^_^
For my critiques, I would say to be careful about the use of textures. The houses look like they were made with more solid, hard line, while the plants and grass look more burred and soft. I think it is important to try and make the whole piece in one particular style so that it looks more cohesive (eg. everything with more solid linework, or everything more soft). I would also be careful about over rendering things that you don't want to draw focus to (lots of detail in the houses in the background, and lots of details in the flowers in the foreground). These things can distract from the main focus of the piece, which is the father and the daughter ^_^
I can't wait to see what you create next!! Great job!