If you've been working in our preset file structure (as you should be!) the next step should be really simple:

Save your project and close it. 

All we need is your After Effects Project and any assets that you have modified. Please remove the other folders from the pack as we don’t need them. Rename the folder with your name and the project name and zip it up like so:
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You can then upload the entire thing to Dropbox, following the Dropbox link provided in the brief.

For more info on prepping your files ready for upload, check out this article here.