First list up the topics related to the current paper.

For each topic, search the latest publications in the top journals and working papers in the top conferences.

For each topic, list up all the relevant citations going through the citation network.

Check the title, abstract, and introduction, and determine which are relevant.

Summarize the relevant papers in a list.

Detect the difference from the relevant papers and list them up. At this point, you should not make any evaluation of the significance. Just detect the difference. These differences will come to the “related literature” section of the paper as a list of novelty.

Consider which differences are important. If you think a difference is important, explain why it is important. It may be a piece of the “motivation” of the paper. If the difference implies some update of the literature's belief, then it may be a piece of the “contribution” to the literature, and a piece of the “motivation” of the paper.