Here is a real-shaped first draft with four things wrong with it. You get four tools — a shape switcher, a division fixer, a subordination swap, and a splitter. Use them and watch the outline’s four rules come back one at a time. The point of a full-sentence outline is that it fails on paper, cheaply, in private.
Repair bench
TOOL 1Shape switcher
Rewrites all three main points into one grammatical form. Siblings should share a shape — and in a full-sentence outline, that shape has to be a sentence.
TOOL 2Division fixer — Point II
Point II promises three practices and names one. If you divide something you get at least two parts, so an A requires a B. Add the siblings it is missing.
TOOL 3Subordination swap — I.B
Put “because” or “for example” between a parent and its child. If the sentence stops making sense, the child does not belong there. Replace I.B.
TOOL 4Singularity splitter — III.A
If a line has an “and” in the middle joining two claims, it is two lines. One idea per entry, or none of them can be supported properly.