Turning your strong point into weak point.

For example: I am a perfectionist and therefore, I rarely believe in anyone who can work as well as me. As a result, I am afraid to delegate important tasks to others. This approach has a weak side as that if you are not clever, you will cause the employer to believe that you are cheating him.

Solving your weakness absolutely.

A better approach is that you state one point which was once your weakness, but you have done well to resolve it.

For example: I tended to be a perfectionist, therefore I didn't like to delegate to others. But I have found out that in order to develop the organization, everyone in the organization must be experienced with many tasks and this is very good for an efficient team work.

You need to show it through your attitude and voice: It is really your weakness. And, you may also state some situations how much that weakness has caused you difficulties.

Give your solution to resolve that weakness, partly or wholly.

Solutions to a weakness may be training, mentoring, etc