Absolutely gorgeous! I love the harder style of shading you've used and how it contrasts with the soft shading on her hair.
Your art style is beautifully unique and makes the character look so happy, the bright eyes and warm smile are so gorgeous and you've perfectly brought out her colourful hair. Your thick lineart matches her anatomy and shading perfectly and the white outline adds to it, making it even better.
Her big ears add to her overall cuteness, she's so adorable and I love absolutely everything about her. You've done a fantastic job and I can't wait to see more of these bust shots from you, you're an incredible artist with so much talent.