Need Electricians Advice

I'm building out an upstairs attic and I need some electrical advice. There's an open circuit, but I want to make sure I don't burn down the house. I'm looking for a professional who can tell me how I should run it and check it when I'm done. I live live in Missouri City - Lake Olympia, so someone near by would be preferred. PM or text me @ (713) 530-3550