If you have large format files to capture then this can get extremely complicated. If you do not know which tables or other things should go where then you could end up with a lot of chaos. So it is a great idea to find a work breakdown structure template that you can use to help you get your project organised.
You should not feel any pressure when looking at this example. You should also not make the mistake of assuming that it is the only example available. The main thing that you need to remember is that there are a lot of examples available for you to use.