1.The protagonist should be the one who take the decision that bring the climactic action.
2.Set yourself creative limitaton.
3.You reveal a charactor's hidden nature by putting the under pressure.
4.Desire in your character is key.
5.Create a physical picture of your character in your mind,it can make a vivid outer.
6. Draw the audience in with empathy and curiousity,and get them indireactly gather exposition as they go alone.
7.You can do whatever you want in your screenplay,but you should make sure it work and why you do this.
8.Building consistent contradiction to creative dimensionality in charaters.
9.When you don't know what to write, think about your favourite movie and why you like it.
10.Character payoffs should always be emotional,unless there is some special reason.