It all went wrong on step 17. You were supposed to use a 6x24 piece and instead you used a 4x24 piece, so your model looks like it's seen through a wide-angle.
On the bar on the top of the page that starts with "find cheats"... go all the way to the right side of it and click on what platform your game is. This brings you to an alphabetical index of games. If you click on a game, it brings you to a main page for it, and there will be a link for the associated message board there.