When deciding to draw scenes from the book, you will want to choose important events that capture central themes.
Some events you could draw from this book include Dill’s arrival, the fire at Miss Maudie’s, the children finding Boo’s presents, Atticus sitting outside Tom Robinson’s cell facing down the mob, the negroes in the balcony standing as Atticus passed, Scout in her pumpkin costume being attacked by Bob Ewell, Atticus thanking Boo Radley for his children, and Scout standing on the porch with Boo Radley.
For example, the last scene is important because it is where we see that Scout really has matured. It brings the plot full circle. As Scout walks Boo Radley home and stands on his porch, she realizes that what her father said was true.
One time he said you never really know a man until you stand in his shoes and walk around in them. Just standing on the Radley porch was enough. (ch 30)
All of these are important and iconic events from the book, in which something physically happens that represents a larger idea.