If you want your photo to have a bit of a bent look , this is how to do it in photoshop manually. You will have to play with the placement and the settings on each and every photo, because where the photo is on the canvas, will effect the way the bend works in relation to where you drag the slider. so it really is a matter of playing with it, but this will teach you what to play with, and how to give it a drop shadow.

Drag your photo to a new canvas, where that is the only thing on it. the canvas needs to be big enough to have room for the photo, after the bend is applied.
next rotate your canvas if you need to, to make it so that the long side goes vertically up and down the canvas.

now go to filter>distort>shear -

You will get a screen that has line going up and down a grid. How you drag that line, will determine how your photo is bent. if you grab it in the center, and drag it to the left, you will get a photo where the rounded part is to the left. Likewise if you grab it in the center and drag it to the right the rounded part will be to the right. Ideally, the curve you give that line, will mimic the curve your photo will have. but if you picture isnt dead center in the canvas, results will vary. So you really have to just play with it to find what looks right.

Now, once you get a good bend that you are happy with, rotate your canvas back, so that the photo is facing normally. Now duplicate your photo. on the bottom layer go to hue/saturation, and move the lightness slider all the way to the left, so that its a blacked out image. now hit CNT t to transform, or select it from the menu, you want to flip that "shadow layer " so that it is upside down. drag it a little bit so that one side is showing on the side, and the other side pretty much lines up. Move it so that the top of the bend on the shadow, and the bottom of the bend on the photo line up. Look at the example to see what i mean about where to line it up. you will have to tranform it some free form to get it to fit right. Some of the shadow will be showing from the top of the photo, dont worry about that yet.

Now add a gaussian blur to the shadow layer. it should be pretty slight. now grab your eraser and erase where a shadow shouldnt be showing. set your blend mode to multiply, lower the opacity ( i used about 50 % on the example ) and then there you go. I link the layers and drag them to my scrapbook canvas from there. i dont merge them, in case i end up needing to change the shadow a bit on the LO.

Hope this helps!