Today we will start examining the filters that come with Photoshop. Before we begin, it might be a good idea to have handy a notebook, this way you can write down settings you find pleasing, and not waste all of this experimentation. Sorry, as I said yesterday, there is no magic bullet.
Experimentation is the only way to discover what works.
You learn something new everyday. I spoke to a woman who works mostly in prepress, and she said that this is a tidbit of information that pretty much slipped through the cracks during development. Well, you'll have to decide. You can also apply a filter to just one layer of an image. By simply making a selection, either by using the magic wand, the lasso, or my favorite, the pen tool.