Yes...I wrote the prologue first (which needs to be said because I am definitely writing out of order), and I found the inspiration for the epilogue during, of all things, Transformers. One scene gave me a visual picture that I incorporated into the location and manner of the epilogue. As for the middle parts, well...I'm in the process of writing the first novel, and I know how I wish the third to go. As for the second, well...that'll be a while.