How to implementing task-based learning in grammar teaching? (An example)

Pre-task: introduction to task & topic:
Create a personality quiz “How courageous are you”
Task cycle:
a. task:
Q:create questions by using if-phrases
A:multiple choices answers, using” would” phrases.
b. planning: choose 8 questions, make hand-outs. accuracy.
c. report: present by handing out, answer the quiz in pairs.
Language focus:
a. analysis: common errors
b. practice: grammar book