You not taking "Work in progress" pics?
It's always a good idea to keep a record of how you went about your project - For instance, when I painted my Fett bucket, I took photos of it from all angles at each stage of the piantjob and saved them as a composite image.
That way,when I am done., I can look back and watch the progression of my work.
Same goes for a scratch-build, or a kit - But MORESO.
Then when someone says "How did you do that?" you can simply show them the photos.