Hey! That’s great and very nice of you! Not only the help offer, but also your will to make the game available to a lot of English speaking people, which is basically my same will. And of course, I’m more than happy to accept your help!
Don’t worry about your Spanish skills not being perfect; if you understand the language enough to make a good English translation, you’re more than qualified! I’m here to review and suggest you any improvement possible taking into account the issues between both languages.
So, feel free to send me your contact info anytime, and we’ll keep discussing this in private. Cheers!