要 + Verb + 就 + Verb (if you're going to, do it right)

Half-measures need not apply

• want / will / need要yào + Verb + then / just就jiù + Verb = "if you're going to …, then … (properly)".
• want / will / need要yàoto make做zuòthen / just就jiù做好zuò hǎo = "if you're going to do it, do it well."
• It pushes for commitment once you start.

want / will / need要yào + Verb，then / just就jiù + Verb …

• want / will / need要yào…then / just就jiù… ties the doing to doing it properly.

if going to要yàodo做zuòthen就jiùdo well做好zuò hǎo。

• want / will / need要yàoto make做zuòthen / just就jiù做好zuò hǎo = "if you're going to do it, do it well."

Recap

Read the full reference: HSK 5 grammar — Sentence patterns.