You have to get on the plane and get to the English Camino, what you do, one walked the Texas Camino and received your proof, you can subtract 30 km, if you wish from your Camino, obviously from the starting point, and walk into Santiago.
This site is run by Ivar at in Santiago de Compostela.
This site participates in the Amazon Affiliate program, designed to provide a means for Ivar to earn fees by linking to Amazon