Coordinate with local radio stations and local newspapers, and ask them to give you air time and space to disseminate information on street children. You can ask children to give testimony on radio if they want to. Do NOT put pressure on them. Invite small groups in the community to go with you to the streets to have a direct experience of a street child's life. Audit your accounts and send the auditor's report to your donors.
People like to know where their hard-earned money goes.