In your sandbox, write a few sentences about what you plan to contribute to the selected article.

Think back to when you did an article critique. What can you add? Post some of your ideas to the article's talk page. 
Compile a list of relevant, reliable books, journal articles, or other sources. Post that bibliography to the talk page of the article you'll be working on, and in your sandbox. Make sure to check in on the Talk page to see if anyone has advice on your bibliography. 

I plan to contribute to adding more details about the personal life of Todd Haynes and his interactions/ties with the LGBT community. Specifically, I will add his full major where he studied at Brown University and his influence on the LGBT community and other non-LGBT communities.

http://www.imdb.com/name/nm0001331/bio https://en.wikipedia.org/wiki/Talk:Todd_Haynes#Haynes