I haven't read the Moloney novel so I can't comment on that, but overall, I very much like this speech. I have nothing serious that I would change. I have one comment and a few places where I think you should change wording in minor ways.
My comment is that your discussion of the book is very short compared to your discussion of the film. Will this be a problem for you -- will your teacher be unhappy about this?
A few things I'd change:
Where you say "transforms his life from a parsimonious man, to a caring person." His life is not a parsimonious man so you can't transform his life in that way. You can "transform his life from that of a ... to that of a ..." or you can "transform him from..."
In the line "which awake negative emotions within Scrooge," "awake" should be "awaken."
Later, you say "juxtaposed to." In American English, at least, that would be "juxtaposed with."
Finally, you say "he doesn’t want the future of being an avaricious miser." This sounds awkward to me. I'd say "the future in which he is an..."
Overall, though, I like this a great deal.