Step 8: Keep cover screws organized.
Once you have a screw in your hand, stick it on the double-sided tape. Work them one by one laying them out in the same pattern as on the back of the computer. See pictures for details.
Notice, that some of the screws tips are different -- there are some cone shaped while others are flat. I don't know what purpose that serves, but it's safer to just keep them in their respective places.