Pretty sure this would qualify as a tip. A friend of mine was struggling with a project and happened upon this series and then turned me on to it. It just so happened that I was looking for a solution this series covered in day 3 or 4 for how to make a scale sized bottle with a complex shape around the time. My project came out great and have this series to thank for that, well and my friend who didn't even know he was saving the day. I just posted about this in another thread where someone was looking for help with some modeling and thought, why not share this with more people?

This is the first video in the series to help you find the rest.
https://youtu.be/d3qGQ2utl2A?si=1VXYy0pDhnMB0Nlu