Only download torents that say "Freelech" and have leechers to count the upload, Freelech without leechers are not useful because you only upload Mb when there are leechers, they are the ones that share what you upload.
In other words a torrent without leechers does not help raise the ratio even if it is Freelech.
Download Freelech torrents that are coming out and seed and increase your ratio. Good luck.