If you have the preset colored, there must be every file of; preset_1body, preset_1head, preset_1head, preset_1head, preset_1tail, and preset_1.material.
If you have those, then they must be in FeralHeart>my_presets>preset 1. If that is correct, start the game. Go to "Preset Maker" and go to the last tab. Select "Use Preset" and click Preset 1. If you like what is on your animal, select export then you may use it on any character in game (: