The body is a lean bullet structure with no concept-explanation padding, assuming Claude's competence; every line earns its place and nothing restates what Claude already knows.

It gives concrete, executable guidance with specific quantities ('ONE question at a time', '2-3 different approaches', '200-300 word sections') and copy-ready phrasing, which is appropriately actionable for an instruction-only skill.

A clear five-phase sequence with explicit validation checkpoints ('Does this look right so far?', 'When your human partner confirms') and a 'When to Revisit Earlier Phases' feedback loop for error recovery.

No bundle files are needed; the skill is well-organized into single-file sections with clearly signaled one-level pointers to sibling skills (using-git-worktrees, writing-plans), appropriate for its scope.

It lists concrete methods ('structured Socratic questioning, alternative exploration, and incremental validation'), but the imperative 'IMMEDIATELY USE THIS SKILL' is second-person voice, which the guidelines penalize by one point, capping it at 2 rather than 3.

It states both what it does ('refines rough ideas into fully-formed designs through...') and an explicit when-trigger ('USE THIS SKILL when creating or develop anything and before writing code or implementation plans'), so it is not capped at 2.

Some natural triggers appear ('rough ideas', 'before writing code or implementation plans'), but common variations like 'brainstorm' or 'design' are absent and 'Socratic questioning' is jargon users would not naturally say.

The trigger 'creating or develop anything and before writing code or implementation plans' is broad and overlaps with planning/coding skills (the body itself references a writing-plans skill), so it could trigger for the wrong skill.