Let her go to study at a model agency.
Start with the food you make to her .. make it healthy and make as alife style in your home ... Then when she grow up make sure that she realy want to be a model and let her choose the sutible place to study this field and take all courses she can .. and don't forget to make her practice sports from childhood like swimming or gumbaz
Getting your child into modeling is as easy as mailing, or emailing, some snapshots to a modeling agent who represents children.
You can hire an SEO company which can promote her social media account. There is no bigger platform than social media to promote your work. Social media platforms like Instagram, Facebook, Twitter.....