KillaQueen98

So there is a face preset I really like from the New character creation presets mod and my plan is to make a small change and swap out a pair of ears for a different kind. Im a total noob and have no idea how to go about this myself, all im looking for is someone kind enough to give me a quick tutorial on how to go about it and what tools ill need or too simply point me in the direction of where i can find a tutorial, any help is appreciated and thank you in advance!

Rather than contributing to the slew of mod requests ill simply ask for a guide so that myself and others can take the initiative and make them ourselves