The description contains no concrete actions - it only describes when to use the skill ('have a spec or requirements') but never states what the skill actually does. 'Multi-step task' is extremely vague.

The description only addresses 'when' (before touching code, when you have specs) but completely fails to explain 'what' the skill does. There is no indication of the skill's actual capabilities or outputs.

Contains some relevant keywords like 'spec', 'requirements', and 'multi-step task' that users might naturally say, but lacks common variations like 'specification', 'planning', 'breakdown', 'implementation plan', or 'architecture'.

'Multi-step task' and 'before touching code' are extremely generic and could apply to countless skills including planning, architecture, design, task breakdown, or project management skills.

The skill is lean and efficient, assuming Claude's competence as a developer. It avoids explaining basic concepts and focuses on specific, actionable guidance for plan creation. Every section earns its place.

Provides fully concrete guidance with exact file path conventions, complete code block templates, specific markdown structure, and copy-paste ready task formats. The 'No Placeholders' section explicitly defines what NOT to do with concrete examples.

Clear multi-step workflow: scope check → file structure → task decomposition → self-review → execution handoff. Each phase has explicit validation (self-review checklist) and the task structure itself embeds TDD validation loops (write test → verify fail → implement → verify pass → commit).

Well-organized with clear sections that build logically. References to sub-skills (subagent-driven-development, executing-plans) are one level deep and clearly signaled. The plan document header template and task structure template are appropriately inline since they're the core deliverable.