Recently finished building the Small Forge. What a great building! I did a build log, if I may be bold enough to call it that, and put a bunch of pictures on there, of the steps. Being a novice card stocker, I muddled my way through, and came out with a pretty decent representation of how it should look.
http://woobergoober.com/oilfield-life/card-stock-models/clever-models-small-forge/