To achieve different visual effects, users can adjust parameters in the modifiers properties. By altering the subdivision levels of the emitter, you can control the number of streamlines, with higher subdivisions resulting in more streams. For more complex models, like the McLaren featured in the rendered thumbnail, start with a plane, subdivide it, and then shrinkwrap it to the model. This method ensures a faster simulation and allows you to modify the shrinkwrapped model, directing the streams to flow precisely as desired. Ensure that the object does not have holes for optimal performance and accurate streamline representation.