Question
Looking for fundamental best practices. How to design, how to get useful customer feedback, how to be responsive and quickly iterate. I know it's a huge topic. Looking for great starting points. I'm a veteran and MBA teaming up with another vet/MBA to make breathing masks (health care, shooting ranges, motorcycle riders). Validating cost structure now and then first target market. Considering form factor, fashion, design.
Answer
You're question is thoughtfully phrased. You asked it here 8 months ago. Are you still looking for help with this? If so, let me know and we'll take it from there.