Can I Add My Children And Spouse After I Win The Lottery?

No.
If you are married legally, you must include your spouse details with a separate photo in your entry, even if the person is not living with you.

If you have children who are unmarried and under 21 years of age, you must enter their details with each of their separate photos in your entry in their birth order.

This will include your natural, legally adopted and children from other marriages including your spouse children.
You must include the children even if they don't want to immigrate with you or not living with you.
Failure to do so will disqualify you from the visa, if found in the later stages.
Those children who are PR holders or Citizen of USA are not to be included in the entry form.

Family photos are not accepted and each person's photos must be recently taken one and must meet the requirements as described in the instruction.