I've noticed that among the denizens of the design forums (like Board Game Geek or BGDF.com), many find the process of writing rules for their tabletop games to be a daunting task. As someone with a background in technical/scientific writing, and as someone who enjoys it a great deal, rulebook writing is one of my favorite parts of game design.
If you'd like for me to write the rules of a tabletop game for you, send me a private message and I'd be happy to help you out (as time permits). If you'd like it done within a certain time frame, or would like me to perform multiple drafts for you, we can work out an arrangement for compensation, as appropriate.
I hope to hear back from you soon
EDIT: I am fluent in both English and Spanish, and am capable of writing rules for both languages if you're trying to hit other markets.