First, make an outline, and then fill in the content.

先搭好架子，再充实内容。

youdao

Make an outline before you start writing.

你先拟个提纲再写。

《新英汉大辞典》

One good way to master the ideas of an article is to make an outline of it.

写概要是掌握文章内容的一个好方法。

《新英汉大辞典》

It would make sense to have them sit together before Congress and outline an integrated approach to second-term security priorities, including Iran, Afghanistan, Pakistan, Syria and perhaps Mali.

BBC: Obama national security team's inbox of problems

The nunchuck-esque controllers we saw at CES didn't make it in the FCC's label location outline (seen above), but an attached accessory list makes note of a Razer-branded controller, powered by a 2800mAh battery, hinting that this prototype's gamepads might well be independent or detachable.

ENGADGET: Razer's gaming tablet drops by the FCC, leaves handles at home