Have a degree
To become a child psychologist, first you need a degree in psychology discipline from related college or university. It gives you the theoretical grip on your subject as will get the chance to study all about psychology and especially about child psychology. During your study and the time you will spend to read as possible as your requirements, it will certainly enhance your knowledge about the all kinds of psychological problems in children and in grownups.
Get the practical knowledge
After getting your degree from any recognised university or college you should get the required practical knowledge about psychology. There are number of institutes around the world who give different types of internships as well.
Get into an internship programme
Doing internship in any reputable instate will polish your early child psychology skills. There are many organisations and institutes which are offering programmes about child psychology and how to improve different issues in children. This will give the right confidence to deal with your cases.
Work also as volunteer
Also work as volunteer in different schools and institutes and try to mingle with children. Get to know their psychology more and more with every aspect.
Apply for state licensing
After meeting all the requirements and required spending time with children in any institute, college or montessori, you should apply for the state licence that will allow you work freely in the state in your private clinic or in any institute.