Regarding reply #1... about drawing a grey or black line, how do I get it to follow the curve of the swoosh? I've tried adding a new layer, copying the swoosh into the new layer, changing the color to black, and then using the Feathering effect and the Gaussian blur effect separately. Neither effect results in something that actually looks like a shadow.
Regarding reply # 2... what is a "drop shadow"? A plug-in effect? If so, I've been trying to use a plug-in called "Shadow" with a result to the above effort.
I've attached a jpeg of my efforts (yuck) and the layered PDN file. There is obvious pixelation between the shadow and the swoosh below it. I've tried feathering the bottom swoosh, but it looks worse when I do that.