I understand you need someone to translate your fiction book to English, and I'm more than qualified to help you. I was born and raised in Mexico (where I currently live, as well), I graduated college in Creative Writing and Literature, I've been writing fiction for over ten years, and I've studied and spoken English for more than 15 years. I will be able to translate your fiction book without any kind of problem, and I'll make sure that both the original Spanish version and the translated English version have no spelling or grammatical errors. I'll also make sure there are no typos or weird sentences that don't make any sense.
If you'd like me to, I could offer some comments and suggestions regarding other aspects of the book as well, including the plot, the pacing, the characters, the dialogues, or anything else, but only if you would be okay with me doing it. My main concern and priority is that YOU are satisfied with the result you get, so if there's anything you want me to change, I will do it until both the Spanish version and the English version end up exactly like you want them to be.
If you want to discuss further details, please feel free to message me! I look forward to working with you! (You can talk to me in either Spanish or English, whatever language you feel most comfortable with!)