Conciseness

The body is dense and prescriptive with essentially no explanation of concepts Claude already knows — every section instructs. Minor trims are possible (the headline/claim guidance repeats across steps 1, 3, and 4, and step 5's card-layout prose rambles slightly), keeping it below anchor 5.

Actionability

Fully executable guidance throughout: a concrete brief-comment template, a `mkdir -p /tmp/visuals/<slug>` path convention, a copy-paste HTML frame skeleton, the `gh-attach shot frame.html out.png` render command, `gh pr view --json baseRefName -q .baseRefName`, and the `git fetch`/`git worktree add`/`git worktree remove` sequence for before shots.

Workflow Clarity

A clearly sequenced five-step process (write the brief → pick the shape → build and render → look and improve → hand back) with an explicit pass/fail checklist in step 4, a genuine validate→fix→re-render feedback loop, escalation guidance (fix at the level it lives at, switch shape after two failures), and a defined fallback when no shape can prove the claim.

Progressive Disclosure

The body is an overview that routes shape-specific detail to clearly signaled, one-level-deep references ([screenshots.md], [diagrams.md], [charts.md]) via a routing table, keeping per-shape examples out of SKILL.md. The inline material (brief, frame layout, checks, hand-back rules) applies to every image and belongs in the overview; no nested references are implied. (No bundle files were present in the review directory, so structure is scored as written.)

Specificity

Concrete outputs are named — "a screenshot ringed on the point, a diagram, or a chart" — plus the distinguishing framing "the image that proves a claim". Falls short of anchor 5 because it is essentially one action (draw one image) with three artifact variants rather than multiple comprehensive distinct actions.

Completeness

Both what and when are explicit and concrete: what — "Draw the image that proves a claim at a glance: a screenshot ringed on the point, a diagram, or a chart"; when — an explicit "Use when" clause listing four concrete trigger situations. Third-person/imperative voice matches the top anchor's example form.

Trigger Term Quality

Natural trigger phrases are present: "a PR change needs a before/after", "a finding needs its cause shown", "a system or flow needs explaining", "a result is in numbers", plus "screenshot", "diagram", "chart". A few common terms a user might say are missing ("image", "visual", "graph", "picture"), which keeps it below anchor 5.

Distinctiveness Conflict Risk

The evidence-image niche (proving a claim for a PR change, finding, explainer, or result) is clearly distinguishable, but generic chart/diagram/screenshot triggers leave minor overlap risk with dedicated charting or screenshot skills.