Use HDT Features to TERA Armors for UNP mod (courtesy of Asianboy345). To put it simple I make the boots actually match the "actual heels" and make it looks no longer shorter while you compare it when you are using normal/vanilla boots. Each boots has different high elevation. Its ratio between 4-7 point of Z axis. Not all of the boots/greaves that come from Asianboy pack that I've converted. You can say it around 70% of female boots. Around 5-10%, I'm not considered it as boots. For other 20%, still on going. Well Below is the list of Variant that I made

BOOTS
---------
Castanic Hunter
Silver Spellsword
White Mage
Myrmidon
Quantum
Rysio
Karassia
Viator
Clarion
Elenium
Val Tirkai
Voidmeld
Xenocite
Jalmarak

GREAVES
------------
Rubicite G
Elven Inquisitor G
High Elf Paladin G
Berserker Metal G
Scion Plate G
Trielek G
Elven Scaled G
Atroscine G
Arcadia G
Sentenia G
Viridinium G


I try my best to eliminate the gap between the ground and the boots/heels without making it to not clip with the ground it self. If any chance you found it, use MCM from HDT feature to fix it.