Well, I looked all over the internet and I can't find a single decent website where I can watch this movie. I guess I'll just have to depend on memory so my lists wont' be as specific as it should be...:

-The changes start to take place in the beginning, when Landon first joins the school's spring play in order to make up for all the rule breaking he has been doing. (Jamie is also in the play)
-Landon asks Jamie to help him with his lines and she makes him promise that he won't fall in love with her, but that's exactly what happens
-when landon ditches Jamie in front of his friends, she stops helping him with his lines and he has to do it all by himself. This makes him start to change his behavior to try and earn her respect again.
-landon really begins to change in character when some of his friends decide to play a serious prank on Jamie and landon goes to help her out. From then on the two alway stay together and Landon tries to become a better person just so he can spend more time with her.
-Landon finds out that Jamie's sick and has leukemia, this gives landon more of a reason to become better. He helps her get everything done on her wishlist, before her time is up.

I tried ot pick all the main points I could think of

Are these points in chronological order through the story?

Or are these points in order building up to the most powerful change-agent?

When you write your paper, DO NOT put them in chronological order. If you do that, it'll read just like a summary of the story, not an analysis of any kind.

Clear?

Those are in chronological order

..so what order should I write them? What point do you think is the most important, and what's the least?

Which one of those had the hugest effect on this character change?

Umm..her sickness, I would say

Then you put that one just before the conclusion. Here's a rather generic outline for you:

I. Introduction, incl thesis st
II. 2nd most powerful cause of character change
III. 5th most powerful cause of character change
IV. 4th most powerful cause of character change
V. 3rd most powerful cause of character change
VI. Most powerful cause of character change
VII. Conclusion

(It almost doesn't matter what order III, IV, and V are in -- just so long as they are NOT in chronological order.)

By making sure they are out of chron. order, you will focus on each point as a cause of character change. If you keep them out of chron. order, then you will avoid writing a summary instead of an analysis.

Don't bother writing the intro or concl yet. Focus on writing your rough draft of sections II through VI first. Once you have them written and then polish them, you'll be ready to write your intro and then your concl.

Okay, that sounds good. I'll get right to it.

But...can't I use anything from my first essay? :( It'll save me so much time

At most, from the first essay, you might be able to use some phrasing about the "what happened" but all the analysis (why did this make him change?) will need to be new. There's nothing about "why" in the first writing.

Okay, I took my time with this, but here we are:

The change in Landon’s behavior and attitude occurs slowly but surely as he strives to stay close to his friend Jamie and to imitate her acts in every way. One of the major scenes that causes him to really bring out his good side is when a group of his friends decide to play a prank on Jamie. Some of Landon’s friends edit a poster sized picture of Jamie which includes her head and the body of a half-naked woman, and distribute it around school. The effect this prank has on Jamie is huge but the effect it has on Landon is even greater. He can’t stand to see her cry and goes to her rescue, showing her in every way that he can be a nicer person and look after her. Landon comforts Jamie through this tough time and gives up his ‘friends’ to spend more time with her.

As it was clear from the story, Landon didn’t always used to be the guy that he was by the end of the movie. Before he met Jamie, Landon believed that being mean was something that all teenagers were born with, and that it didn’t really hurt people. Of course there was a limit; but Landon had an imaginary line drawn for him and he was nowhere near it. All of this started to change when Landon decided to join the spring play in his school. He noticed that Jamie, a girl he has known and picked on all his life, is also in the play with him. All though he starts to see more than just the shy, quiet girl that was Jamie, Landon still didn’t thoroughly understand her behavior and the reason for why she acts the way she acts. At this point in the movie, the change in Landon’s character doesn’t start physically, but deep inside of him something is telling him that he needs to get closer to Jamie and get to know her better.

In order to get to know her better, Landon needs to become closer friends with Jamie. For starters, he would have to stop making fun of her and start to try and understand her. He decides to ask Jamie to help him with his lines in the play since she was pretty good at it herself. Jamie agrees, and the two start meeting each other almost every day outside of school. One of the strange things that Jamie says to Landon at the beginning of their friendship is, “You have to promise you won’t fall in love with me”(A Walk to Remember), and Landon, thinking that surely that will never happen replies, “That’s not a problem”(A Walk to Remember). The irony of this whole scene is that what Landon promised her is going to end up being broken.

Even though the viewer can sort of guess that Landon is going to end up falling in love with Jamie, he takes his time doing so. In the beginning of their friendship, Landon is still a little hesitant of being too open with Jamie, and is still very close to his old friends. So one day when Jamie happens to see him with his friends at school, his friends start to pick on her as they usually did when they saw her. Expecting for Landon to say something, Jamie looks at him confused, but Landon does not do anything to stop his friends. This creates a big gap between the two and Jamie stops talking to him for a while, until he finally stands up for her in front of his friends. At this point in the movie, Landon’s character has taken a full turn; he’s lost his old personality and is now a copy of Jamie’s character.

Lastly, and what I believe to be the strongest turning point of Landon’s character, is when Jamie finally tells him that she is sick and has leukemia. While hearing this Landon can’t control himself and a thousand thoughts cross his mind. It is hard for someone like him to believe that a person could even die at such a young age. As he says in the movie, “You're 18. You’re perfect”(A Walk to Remember) He decides that from now on he is going to spend every moment with Jamie, doing everything that is on her wish list, and acting only in the way that she wants him to act. In the end he finally fulfills her biggest and number one wish on her list, which is to get married in the church that her parents got married in. Soon after their marriage, Jamie passes away, but Landon lives in peace because he is glad that she changed him and made him become a better person.