So now you should have a reasonable understanding of how controls are made and added to an interface. You've seen the innards of some of the more common controls that are available in Torque.
You've also learned how to use one of the valuable built-in tools that Torque supplies, the GUI Editor. It's worth your while to practice making a few interfaces, even goofy ones that have no purpose if you like, just to reinforce the steps involved and to become comfortable using the GUI Editor.
Staying with the visual aspects of a game, in the next chapter we will examine structural material textures.