Think about the thesis statement. This is a statement summarises the main idea of your report.
Think about the format of your report. Depending on the topic, there will be different structure styles.
Body paragraphs - This is where you state your evidence. it is VITAL that you do this. If you are thinking about how to make a supermarket popular, think about the psychological tactics that supermarkets uses and back it up with evidence (Maybe studies).
For e.g. supermarkets tend to make the product area an inviting environment to create a sense of trust.
Also, (Got of Quora website) studies have shown that people who use the fresh food area spend more. Supermarkets want more money, right? Maybe, layout the supermarket so your priorities will be with these sort of customers.
The most popular items are usually placed in the middle in the aisle. Think about why? The layout of the supermarket is REALLY important.
Eye level marketing - maybe all the sugary sweets on a kid's eye levels, and maybe the wine and the beer on an adult eye level.
You need to also make it persuasive. Make sure you think about layout, persuasive devices and most importantly... content!