The document discusses the differences in approach between the filmmaker's preliminary task and main film opening task. For the preliminary task, there was little planning, research, or attention to conventions. However, for the film opening the filmmaker learned from this and put extensive effort into planning, researching conventions, finding suitable locations and actors, choosing an appropriate soundtrack, and considering elements like lighting and titles. This level of planning and research resulted in a higher quality final product for the film opening compared to the preliminary task.