Build a story . Again, your survey of the literature is not just to show how informed and educated you are, it is to guide the reader toward the objectives of your study. Gaps and missing pieces are as important as what was learned. And be fair. The reviewers may be the very people whose work you're citing.
Every study is limited by resources, and every method has tradeoffs.
Talk about your pilot study . Describe your study, what you've found, and what its limitations were. Be your own critic. But be sure to end at the place your objectives take off. Describe your procedures .