Show a deliberate learning method and a concrete application with a result : not just the phrase 'fast learner.'
Big migrations succeed by moving incrementally with a fallback, measuring at each step, and never risking a big-bang cutover.
A real failure owned honestly, with a concrete lesson that changed your behavior, is more impressive than a fake failure that is secretly a brag.
Good mentoring is teaching someone to think, so they can solve the next problem without you.
Feedback is a free gift of information; the professional thanks the giver, changes the behavior, and verifies the improvement.