To make this drawing, you can draw the outline of the states and above the outline several people with little space and with the expression of tightness. This will create the impression that the population is in a very large amount compared to the state space, which will show the concept of overpopulation. This type of design will also highlight the importance of family planning.
You will be able to use the outlines of Uttar Pradesh and Maharashtra states which are the most populous states today.
