I wrote the first draft of Down The Tubes in November of 2013, for NaNoWriMo. I had such a great time, too! I loved my concept, utterly and completely. I've always been fascinated by pneumatic mail systems and had a great time hauling them into my universe. I felt so very clever, and especially enjoyed launching the adventure by killing a rat.
Now, approaching two years and two drafts later, that initial thrill has worn off, and I'm seeing the manuscript through more critical eyes.