Get headshots or a recent photograph taken. Instead of using this photo to submit to directors, as many actors start out doing, a child actor should only be submitting her headshots to agents. Agents can recommend a manager if you are not willing to be the manager of your child.
Choose a reputable agency to represent your child. It is ideal to pick an agency that wants to maintain a pressure-free, open relationship with you and your child. If your child doesn't feel like going to a particular audition, it should not be held against her. You do not want to be contractually bound to the agent if your child decides not to pursue acting.
Sign up for film acting classes. If your child takes film acting classes, she will be ahead of the competition. Do not attempt to teach acting to your child, even if you are a professional acting teacher. instead, bring your daughter to another teacher you trust. This way, you can monitor your daughter's success while maintaining the home relationship she needs and that does not afflict her acting work.
Continue your child's education. Whether your child is schooling on the set or is going to public school while attending auditions, it is necessary to continue your daughter's education. Do not pull your child out of school, no matter how busy her acting schedule is.
Do not force your child. If your daughter starts expressing hesitance or regret before going to auditions, it may be time for a break. Tell your child to concentrate on her other hobbies, to see if there is something else in which she is now more interested.