My best suggestion would be to do your research on what types of sales questions are asked in an interview and make sure you have your presentation on point. I prepped for this interview for a week. I received a template from the recruiter to prepare the presentation. I even received inside help from someone in the current position with tips on what they were looking for in the presentation. I got very nervous ( hence the stumbling) because after my presentation one of the other sales managers said, "where did you get this information???" She said it kind of sternly so I immediately thought, "oh crap, she thinks someone did this for me" or "maybe the info my inside person shared wasn't supposed to be shared?" I answered by telling her I did online research but let her know I did an informational interview with someone on their team to learn more about the position etc. This definitely affected my performance after that because she could tell I got nervous, became anxious then to realize I forgot to turn my camera back on for about 5 minutes into the questions after the presentation... (hence the technical difficulties)
If you are trying to transition from one industry to sales (like I was), it is very important to show your transferable skills. (Which I did and I think I did a great job in that area.) Make sure to know what motivates you, what is your greatest weakness, what part of your current job do you like the least ( make sure to turn it into a positive). Make sure all of your answers translate into sales. I did pretty well with most of the questions but I can see where I need to improve. I didn't get the job but I learned a lot for the next time. I hope to apply again next year. My friend who works here in this department interview twice before getting hired. Her friend who works with her interview three times before getting hired.
