Thank you friends, I've already received three personal messages and I am now replying to them. Next Monday I'll send the document to them for evaluation. I think it's a good idea to give this document the familiar look and feel that a native English-speaking person would be able to achieve. I hate those documents (manuals made in China for example) on which you immediately see that they were written by someone at the opposite side of the world.

Un abrazo - Andrés