You're overthinking this, there is no template. It looks for each tag anywhere in the path. info.txt details all tags.
Halfkinfox/female/BlondTitsB.png
female/Halfkinfox/TitsBBlonde.png
HalfkinfoxfemaleBlondeTitsB.png
Mousekin'sAwesomePortraits/Halfkinfox.BlondTitsB.female.png
All of those will work and come up with the same result.