形かたちから入はいる

expression, godan verb (-ru)

start with the outward form; focus on appearances first; get the trappings right before substance

Often implies a criticism that someone is prioritizing superficial aspects over essence or content. Can be used neutrally when form is a practical first step.

• 彼かれは語ご学がくを学まなぶとき、いつも形かたちから入はいる。まず高こう価かな教きょう材ざいを揃そろえるんだ。

  When he learns a language, he always starts with the looks—first he buys expensive study materials.

• 趣しゅ味みを始はじめるときに形かたちから入はいるのも悪わるくない。道どう具ぐを揃そろえるとやる気きが出でる。

  Starting a hobby by getting the gear right isn't bad either; having the tools motivates you.