It's no secret that a handstand ranks among the top three skills a gymnast needs and enforcing proper technique early is one of the coach's most important objectives. This video from GymTactics presents a great syllabus for handstand progressions.
Here are the main teaching stations. Be sure to watch the entire video and think of creative ways to plan stations for your training session.
And here is the full video:
Teaching Handstands To Six-year-olds: