Don't you love when CT share there tips and bag of tricks? On the ForeverJoy blog today, Monica shares a great tutorial on how she gets a curled effect on her layout shadows You can read her secrets *here*
I think shadows can add SO much to a page- and actually find it relaxing to play with them once my page is done... its like fluffing pillows LOL!
I made an action that puts the shadow on a separate layer and calls up the warp tool. So you just have whatever layer selected, hit the action, and start pulling corners. Super fast and easy. I shared it on my member spotlight.
There are workarounds, but it's not built in. One option is to apply the shadow you want, go into the FX and drag the Distance slider so the shadow is completely separated from the element, Simplify the layer, drag a selection box around the shadow, and cut. Now you have a shadow on its on layer to paste back in and modify however you want. IIRC, there is no "Warp" in PSE but you can still do some distortions on it that look good. The other option is to make the shadow 'from scratch' yourself. Duplicate the element, make it solid black (or dark brown or whatever color you make your shadows), change the blend mode to linear burn, manually offset it however many pixels, apply a Gaussian blur, and lower the opacity until it looks good.
I have a video on @Danyale's blog on how to do the first option of pulling the FX away. If you need a visual help.