Hi Dave, welcome to our little happy group. Retirement is wonderful, lots of free time, no wrist watch wearing anymore, no alarm clocks to respond to, no long drives to work in heavy traffic, you can wake up after the sun rises, no set time to eat breakfast, leisurely take your time to decide what projects you want to tackle today and watch all the TV you want before you leave the house. The down side is..........you take a drastic cut in wages, I mean big time.
Now for the teardrop project. Perhaps you can do what I did. I got the "trailer frame", cut out a cardboard profile and nailed it inside of the garage wall, began sketching from hundreds of pics downloaded from the forum, and convinced the sweet wife that this was going to be our next journey to happiness...........which took some convincing.
Building a teardrop trailer is a real adventure. Take plenty of pics, as you can't go back and capture the in-between stages ever again. If you feel like many of us do, you will find that owning and using a teardrop of your own design and effort, will continue to reward you in ways that you can't even imagine.
So, look around, decide on the profile, size and materials and you will be off and running. We look forward to seeing your progress pics and remember, ask, ask, ask and we will answer, answer, answer.

Good luck, enjoy your build and come join us around the campfire.............Roly