History of economic thought: Marxs Capital Volume I

In this course History of Economic thought, we have been reading Karl Marxs Capital Volume I in which we read chapters 1,2,3,10,12,13,14,15,19,26,32. I have to write a 4 page paper on whatever topic i desire limited to this text. Honestly, the reading was complicated and i had a hard time trying to figure out what i can write about. One suggestion is to write about why Marx crticizes capitalism and why he thinks that capitalism is not as great as people and economists think it is, and ultimatley why capitalism will itself lead to its own downfall, which i think is a good topic.
The essay has no borders besides that it must pertain to marxs capital volume I and be no longer or shorter than 4 pages double spaced. Also the sources in use must be capital volume I which is available on the internet through a google search.