Next steps
You have come a long way now. You have practiced solving several scenarios and successfully handled different functional and technical challenges. Let's plan your next steps together.
Practice and practice more
Practice makes it perfect. This is applicable for pretty much everything in life, including preparing for the CTA review board.
To put it simply, the more mocks you do, the better chance you will have of passing. Put yourself under conditions as close as possible to the real thing. Practice using a timer and presenting to someone.
I expect my mentees to do between five and nine full mocks before they are considered ready for the review board. If you get a chance to do more, grab it. The more mocks you do (especially using different scenarios), the more you will know about your preferred style and strategy to tackle this exam.
You can even do mocks using the same scenario several times. There is value in using a new scenario. The surprise factor...