Kindly follow these steps:
1. Firstly draw the title of the subject at the center of
your page and also draw a round circle around the title.
2. Make the sub headings and relate them to some facts. Also
draw the lines outside the circle and label them.
3. Next, from the subheadings, draw more lines of further
subheadings related to the level of information.
4. Label all the lines according to the individual facts or
5. At the end, must sure that all the lines are linked to
the circle like branches from the tree which will sum up all your data.
Hope it will work!