I am sure other coaches will answer in a very detailed way.
For myself I will only tell you the following tips :
- Combine different ways of practicing : on your own, with other candidates, with real consultants /coaches
- Practice each of the dimensions indvidually with focus exercice : maths, structuring, recommandation
- Always look for feedback, and once you receive work on it
- Don't wait too long before simulating real interview with consultatn / coaches : this will give you a sens of the real situation and expectation + relevant feedback on your perf