Expertise is mostly just a way to reassure clients that you will be able to do the work that you promise to do and that after they have cut the check the system will actually function.
The single easiest way to reassure someone that you're capable of doing X is to have done X before. (Or even better, to have someone trusted say you have done X before.)
The single easiest way to reassure someone that you're capable of doing X is to have done X before. (Or even better, to have someone trusted say you have done X before.)