Well I will give you slightly more specific info that way you are not too overwhelmed by things to go along with Zaroque's link.
If you want others to see your preset:
You have to go to
C:\FeralHeart\presetsMost of yours presets are saved there as 1 exported .fhp file etc (The number according to which preset it is). If you have a friend or others who want to see your preset, all you got to do is is give them the download of that file.
If your friend or whoever downloaded it places that file in their right folder exporting it correctly, they should see the preset in game.
On the other hand if you are trying to share your preset for mass use and downloading and not just so people can see you you'd give them all the preset files in
C:\FeralHeart\My Presets and the correct files from the specific file folder number you want to give them preset_1 or preset_2 so on

. From there they can place those files in the right places on their pc and use your preset in game.
Hope this helps.