Wilde through the use of metaphor, symbolism and personification exhibits how Dorian's intrinsic death is a result of murdering Basil Hallward, therefore foreshadowing the end of the book.
Now that is a good clear thesis sentence!
Let's make it flow better, though:
Wilde Through the use of metaphor, symbolism and personification,
Wilde exhibits ...
You really seem to have the right idea about this kind of writing. Now you are ready to tackle any research paper they throw at you. Even when the subect is not literature, it works the same way: grab the attention, make a claim, and write several paragraphs to support your argument in various ways. That is strong.
Kevin, EssayForum.com