Transition to leadership roles

This is a bit embarrassing to ask, but I have to.

In my field, I am recognized but as well as techie w deep knowledge. However I struggle to ace interviews meant for (little non techie ) leadership/exec roles. Usually I go into second or third round interviews and get dropped off. Feedback is not much. Have done middle management successfully

How do I evaluate myself so I get some success ? Any pointers- much appreciated!