Part 3 is logistics: paste the abstract from the talk template, then close the laptop.
On this theme the canonical abstract lives under /talks/templates/. The blog series is the story around it, not a second copy of the CFP text.
Paste, do not rewrite
Open the template, copy the language you will speak, submit. Rewriting per conference is how CFP season turns into twelve drafts of the same paragraph.
Say no
A hook that fits Devoxx will not fit a 25-minute lightning track. The third step is choosing rooms, not filling every form.