Mind map is the best technique to clarify concept, relationship between the facts and figures and develop the connection between one event to other and possibilities of events which will be occur. I used this technique to learn clinical pharmacy for developing a therapeutic possibility, and relationship between different medicinal output. I used to take keywords then I plot my map thorough these keywords and find possibilities. Your approach is very good but please don't use whole sentence, use small keywords. Please don't put big efforts to work on mind, just take page, make the mind map with pencil or pen and don't spend too much time on colouring of your mind map.
