What it does well
Spots the flaw everyone else missed, and fixes it rather than pointing at it.
Earth · Mutable · ruled by Mercury
♂ Mars in Virgo ♍
Mars governs drive and anger — how you pursue and how you fight. In Virgo, that function takes on precision, usefulness and noticing what is off — a Mutable Earth expression ruled by Mercury.
Where it strains
Applies the same scrutiny to itself until nothing is ever finished well enough.
Reading a placement properly
Mars in Virgo describes a function in a style. It says nothing yet about where that plays out — for that you need the house, and the house needs a birth time. A placement read without its house is half a sentence.