Address your legislator as either "Senator" or "Representative."
Write on your personal or business letterhead if possible and identify yourself.
Try to keep your letters to one page, and put your message in your own words. Be short and to the point. Chain letters or chain emails become more burdensome to the legislative staffs and thereby become less effective.
Ask the legislator to reply.
Like everyone else, legislators do not like a threatening tone. They represent many different constituents and interests. Make your point with the understanding that others may disagree.
Be sure that your legislator receives the letter before action is taken on the issue. Check the legislation"s status at Texas Legislature Online so you know what stage of the process it is in. A State Senator, for example, would be the wrong person to write regarding a House Bill.