Using face charts are a good way to practice makeup looks. As Mac makeup artist we all are used to using these and have grown to love it. It's not easy using makeup on them.
It has helped me in many ways to get confident in placing colours next to others to see how they look with out failing in customers.
To get your own I suggest go into a Mac store ideally before its busy and ask if you have have one. You never know if you have a nice asistany she may give you few.