Chosen Solution

I messed up, and rounded 3 screws inside the Moto X. How would I remove them?

If you have access to a dremil tool take the fines cutting wheel you can find and cut a slot in the head of the screw and then use a flat screw driver to get it out . I have also had some success with using crazy glue or super glue to glue a screw driver to the screw to come out but be very careful to not get any glue on the surrounding area or you’ll never get it apart