Some important points to be kept in mind by every preacher:
1 He should do dawah to please Allah swt
2 He should not seek worldly benefits for his efforts.
3 He should be consistent in his dawah
4 He should not mock the people he is addressing
5 He should do dawah with wisdom
6 He should know the psychology of the people
7 He should tolerate the criticism and false allegations of the people
8 He should not give up dawah due to opposition of the people
9 He should act on the messages he is delivering.