good job
You did a good job overall, and I love the colors, but the proportion is off. Her eyes are a little too far apart and her ears are a little high. I know typical anime drawing screws with proportion too (HUGE EYES ALWAYS) but just try to keep it in perspective.
PS. "She's roughly 6 years old" WTF. Why did you give her boobs? Six year olds don't have any boobs. Also, for children, the cheekbones aren't as high or defined, so I would make the face a bit shorter.