Start with teaching the Elements of art
First element will be LINE.
Make the kids learn different type of lines
Help them in making simple line drawings with the different types of lines learnt
Always start the day with duplication exercises, they are considered as warm up activity before drawing , draw one time and ask the kids to repeat it for 3 more times
If you have kids who already know the basics well or doesn’t want to do simple line drawings, ask them to doodle or create a Zentangle of their own with the lines