there are probably to many to mention...
i think what you need to do is construct a thesis and decide on points which you'll use to argue your thesis. And then you can find certain techniques as supporting evidence.
e.g. if you want to talk about belonging being a self-deceptive illusion, you can mention the elements of the play showing a character belonging neither to the court or the forest. you can use techniques such as dialogue, characterisation, and construction of setting to support your argument.