Once you have confirmed that the paper will apply the necessary pressure, you can then put the screws back in.

If the case doesn't seem to close properly as it did before, do not keep on trying to tighten the screw down; you will strip the screw.

If the case doesn't close properly, you will need to open the device back up and remove a tiny bit of the paper until it does close, that way it will retain its water resistance.