• Press Windows + R

• Paste (quotation marks included) "%appdata%/../LocalLow/Wishfully/Planet Of Lana" and hit Enter

• In this folder, the saves in the 1st, 2nd and 3rd slot are named respectively slot_0.sav, slot_1.sav and slot_2.sav.

-To keep a backup of a save, simply copy the corresponding file and paste it where you want (it can be in the same folder, just remember where it is)