From the Time Machine's Glove Box: Three Things I've Learned

After finishing off Variation No. 3 I got to thinking about a post from back in 2013 about three things I thought were important about how I approach to model making, and wondered why I wasn't applying those to the A&A project. I seem to have forgotten about items #1 and #3. However, after suitable remembering, I'm diving back in to get it finished.