Interior Flooring and Walls: My dad is a carpenter on the side and had some of this "Japenese Redwood" or watever he called it laying around so i used it for the interior to keep from using my sandeply.
Veneer edging I used to cover the seams in between the bracing and the sandeply sheets on the inside of where the doors will open, otherwise when the doors would open you would see the seams as in the 3rd pic. 4th pic is what it looks like with the edging: smooth and finished looking. Very much worth the ease of effort to put on. All you need is and iron and BAM!! Like Emeril