Ensure you do not put anything on your resume that you can’t prove. In this context, validate doesn’t normally mean executing the skill on the spot, but by giving strong examples of time you have done in the past.
One of the easiest ways to make sure the interviewer is aware of your relevant industry experience and skills is to politely mention them when they are relevant. For example, if your interviewer asks you what your capabilities are, you can take the opportunity to talk about the specifics of your skills and experience. Provide brief descriptions of your past responsibilities, and make sure you include all relevant experience within your resume as well.
If you have plenty of industry experience and skills, you should highlight them during an interview based on the role you are applying for. However, there is a big difference between playing up your industry knowledge and skills, and just pretending. Ensure you make a great impression by highlighting your skills in the right way.