Tsukimiya Ayu from Kanon
The usual weight of 0.8 to 1.0 is fine enough
You'll likely have to prompt in "red headband" yourself, and have "holding object" in the negative prompt since what can I say, Ayu is holding things in like 60% of the art you can train her on
"tan coat with white turtleneck" and "backpack with wings on it" should suffice for her outfit. You can add "brown mittens" too