Don't worry, it's not your fault, it's Techne's fault. It happens to everyone on Earth.
Also, for the flat texture (for the... leg dangling part thing), did you use a flat texture or a 1-block thick cuboid and just texture one side? If you didn't, make it a 1 block thick cuboid. It gets rid of flickering in-game.
Also, don't go off in a tangent and like spam-make models. Take your time, try the best you can do. When you're working on Ariados, finish it. Same with your klink, finish it.
Hope that helped,