I am writing a critique for my American Literature class on The Great Gatsby and I am so stuck. I don't know exactly how to prove my thesis. I need four different points.

Question

My thesis:
Gatsby achieves the American dream by becoming quite successful; however, achieving the American dream does not always create happiness. Gatsby becomes quite wealthy yet fails to get what he truly wants, Daisy, showing that unlimited wealth does not always lead to unlimited power.

My first point/body paragraph: Gatsby gets all this money and wealth and has this extravagant lifestyle yet in the end fails to get Daisy, which was his sole purpose for making his great lifestyle.
I don't know what I could use as points for each of the next three paragraphs!
I also need some assistance with which quotes/ details from the book I could use to prove my first point...as well as the three other points I haven't made yet.

Feedback on the above, as well as extended feedback/ pointers on how to tackle this critique would be much appreciated. I've been working on this for days and have only gotten a mere introduction!
My introduction is as follows. Perhaps it will help with giving me some points? Feedback on it would be helpful if you think it should be altered...

In The Great Gatsby, by F. Scott Fitzgerald, Jay Gatsby lives in the Modernist society of West Egg during the 1920s where the American dream is portrayed in a way opposite from the stereotypical view of the American dream, distorted. Fitzgerald renders a society where ethics are put aside by the people within whom have minds crowded with materialistic motives and empty goals. Gatsby ends up creating a successful living for himself, however, merely in a materialistic sense, built from a life of poverty. Gatsby embarks on a journey to achieve one goal which is to get his beloved lost love, Daisy, back into his life. Gatsby achieves the American dream by becoming quite successful; however, achieving the American dream does not always create happiness. Gatsby becomes quite wealthy yet fails to get what he truly wants, Daisy, showing that unlimited wealth does not always lead to unlimited power.

Thanks!