What must have changed
Identify the change in the child’s needs or circumstances that happened after the existing order. Section 47 uses that statutory threshold, including a change caused by another person’s circumstances; the application should not simply reargue evidence that was already available.
Best interests still govern
If the threshold is met, the court’s parenting decision continues to be governed by the child’s best interests under the Family Law Act.
Supreme Court application route
Where the existing order is a Supreme Court final order, the current Rule 10-6 procedure for applications to change a final order includes special service and response timing. Use the current rules rather than older file-first instructions.
Evidence to prepare
Common evidence includes the existing order, parenting history since the order, school or care information where relevant, and a focused affidavit explaining what changed.
Cost planning
A narrow variation request is usually easier to budget than a broad attempt to relitigate every parenting dispute. Define the exact clauses you want changed and why.