I seldom ever finish a project before it has been "put-away" a few times. When you come back to it, you find new ways to get over the hurdles that slowed you down. You tend do a better job on your work, because the tedium has been left behind. When you do come back to it, it's like e new project, that won't take as long to finish.
Here are a few pics of my unfinished projects. You will nitics, there are 3 different B-17s.