I need to design a book jacket for To Kill A MockingBird... What picture/symbol/scene should i draw???

http://www.sparknotes.com/lit/mocking/

You should find an idea in the section here called Themes, Motifs & Symbols.

=)

a mocking bird getting killed

An appropriate theme for your book jacket can have a mockingbird but it doens't have to be killed. The mockinbird just symbolizes a creature or someone who didn't commit sin and only entertained people. They didn't cause harm as well. The mockingbird can resemble Tom or Tim Robinson (haven't read the book since last year), or any man or woman being put against racial discrimination. You can even create a drawing revealing how Scout and her brother were able to mature and open their eyes to their racial neighborhood. People aren't always what they appear to be like, and you can't always assume they have good qualities based uopn their looks.

Why does Scout wish her father was "a devil from hell" ?

For your book jacket design, one idea could be to depict a scene from the book that highlights the theme of racial discrimination and the injustice faced by Tom Robinson. You could create a drawing that shows Tom Robinson on trial or Atticus Finch defending him in the courtroom. This would represent the central conflict of the story and emphasize the importance of fighting against prejudice.

Another option could be to focus on the theme of coming of age and the growth of Scout and her brother. You could depict a scene that shows their journey of maturing and learning important life lessons. This can be illustrated through a drawing of Scout and her brother observing their racially diverse neighborhood, symbolizing their growing awareness and understanding of the world around them.

Additionally, you could choose to represent the symbolism of the mockingbird itself. The mockingbird in the novel is a symbol of innocence and harmlessness, as it is explained in the book that "it is a sin to kill a mockingbird." You could create a design that features a mockingbird with key elements or characters from the story surrounding it, symbolizing their preservation of innocence or their struggle against injustice.

Ultimately, the choice of the picture, symbol, or scene for your book jacket design will depend on which themes and aspects of the story resonated with you the most. It's important to select an image that captures the essence of the novel and conveys the messages you want to communicate to potential readers.