An example of a flow chart would be something like [[this]]
. It shows what actions are taken based on what criteria within your program. For example, one box might be "move forwards." This also works for the rough sketch and/or plan.
For the step Specify the Requirements, I think you would probably want to write down the suggested requirements. That would be sort of like the "objective" of your project.
Hope this helped, and feel free to ask if you have any more questions!