Providing sensible, well-thought-out parameter defaults

If the vast majority of the people using your module will use the module with a certain parameter set, then of course it makes sense to set that parameter with a default.

Carefully think through how your module is used, and put yourself in the position of a nonexpert user of your own module.

Present the available module parameters in a sensible order, with more often accessed settings before least accessed settings, as opposed to some arbitrary order, such as alphabetical order.