A panel can look perfect and still fail inspection on one screw. "Neat and workmanlike" is enforceable (110.12), every cable needs its own connector, conductors need room to bend, and torque is a number — not a feel.
Equipment shall be installed in a neat and workmanlike manner (2023 wording: "professional and skillful").
At least 6 in. of free conductor at each box; dressing starts with length.
Wire-bending space at terminals/cabinets per Table 312.6 — room to turn without strain.
Each cable secured to the box — one cable per connector.
Where a torque value is given, a calibrated torque tool shall be used. The breaker can't see a loose lug — it only counts current.
Every circuit legibly identified as to purpose — not "Dave's room."
Each grounded conductor terminates in an individual terminal — one neutral, one hole.
Torque: Klein 57032 (in-lb). Connectors: 3/8" NM/Romex. Any tool = Klein Tools.