I'm Mexican native, and I have been pastor since 1976, preparing my sermons and writings in Spanish and English.
I learned English since I was a child, because my mother has a doctor degree in that language and teached me.
My Spanish command is full, and I manage a lot of dialects of it that goes from Castilian to Argentinian, including a lot of Mexican modes.
I've write a lot of articles for different magazines here in Mexico since 1978, and I'm University teacher since 1984.
I'm sure I'm the right person you need.