Perhaps the most important decision in setting up an appropriate job is choosing a base (fabric or paper) to work on. The graphic character stretched with deliberate immersion takes a different style on canvas and paper.
There are numerous categories of fonts each of these will give a fairly distinct feel to a piece, however, as always, it depends on how you use it. Adjusting the space between individual characters or objects is often used in detail-oriented projects such as the charm design to make the spaces between shapes even.
The use of color in design is a class in and of itself, but here we can touch on some general techniques.