Feedback - Separated note

Hello,

I would like give a feedback in function of the competence used in the question.
For instance, the test is about 3 competences :
Questions 1, 3, and 6 : competence 1
Questions 2, 4, 7 : competence 2
Questions 5, 8 : competence 3.
The questions are mixted to stimulate the brain, so the competences are not sections.

I would like give a global note and a note or feedback on every competences, the goal is student could know what he needs work or what competence is acquired or not.
For instance, 14/20 with 100% in competence 1, 70% in competence 2 and 30% in competence 3.

How could i do that ?
Thank you for your help