A question about AFA

Hey guys can ne1 tell me the process of how to get my thundercats graded by AFA, ive got the site, but id like some insight into how u actually go about sending and getting them graded, might sound a bit silly but im new to the whole grading thing and some of my figures sure would be worth getting graded…im also very scared incase they get lost in post or something..someone reasure me lol!!