Every scriptwriter worth his salt swears his success by the screenplay writing techniques he has mastered. So it is important for every budding scriptwriter to not only be aware of all the screenplay writing techniques but master them in such a way that they can be confident to follow them without any further reference.  It is not enough to merely glance through the techniques but put them into practice all through the preparation as well as whenever one works on a professional screenplay assignment. These guidelines or tips are so valuable for proper visualization of the entire story and its characters. The clarity in what has been written in the screenplay would come out for any who go through the introduction, only if all the elements have been factored in. Hence scriptwriting schools spend sufficient amount of time in drilling in the principles and techniques so that it becomes the second nature of the screenwriter.