	<Item>
      <uvPos x="0.498000" y="0.250000" />
      <scale x="0.520000" y="0.140000" />
      <rotation value="0.000000" />
      <nameHash>mpHeist3_Tat_014_M</nameHash>
      <txdHash>MP_Heist3_Tat_014</txdHash>
      <txtHash>MP_Heist3_Tat_014</txtHash>
      <zone>ZONE_HEAD</zone>
      <type>TYPE_TATTOO</type>
      <faction>FM</faction>
      <garment>All</garment>
      <gender>GENDER_MALE</gender>
      <award />
      <awardLevel />
    </Item>


Search in the file and replace the values with the ones in this READ ME you will find the file where to replace it in this directory:

GTAV\mods\update\x64\dlcpacks\mpheist3\dlc.rpf\common\data\effects\peds\mpheist3_overlays.xml