When you export a map, it will spit a bunch of files into "C:\Feralheart\exports." You want to get all of the files related to that map and put them all into a .zip file or a .rar file by right clicking them and going to "send to.." and click "compressed folder. Then upload the zip to mediafire.com or some other file uploading site and give the link to your friends. That's about it!