It's incredibly simple; there aren't really any steps. Your sponsor (your 1K friend) should have received (or will soon receive) an email explaining the details of the 30K milestone award. When she follows that link, she'll reach a website where she can choose her personal award; the next screen will allow her to gift the 3P membership. All she needs is your name and MP number (and maybe your email address). She confirms it on the next screen and it's done. Takes about a minute.