Waves of paper is a very popular trend right now. To do this for your layout, it involves you either acquiring or creating your own wave shape, to clip or crop your paper too. To assist you in doing this, I'll review 3 possible ways to accomplish this. These are from the perspective of photoshop, hopefully you can apply them to your program of choice.

#1 is probably the easiest and it involves the warp tool.

Create a rectangle on your canvas and go to edit>transform>warp. this will give you a grid over your rectangle, and you can drag any part of that grid to warp the edges or inside of your image. play with dragging the different points, to see what shapes you can create~



#2 is also relatively easy, but requires an additional step if you wish to not have both sides of your wave have the same bend. Create a rectangle, and go to filter, distort, shear. now you will see if you move parts of the line on the shear diaglogue, that your rectangle bends to match it. this will give you a wave with 2 identical sides. to get a different wave on the other edge, create another rectangle on another layer, and use the shear filter again, and then merge those two layers together to create your shape.

#3 is using the pen tool. a quick and easy way to do this is to create your rectangle, but do not rasterize the rectangle shape. now select the "add Point " tool, from the pen tool options, add a point, and then drag it inward or outward. repeat this process a few times around your rectangle, until you have a shape you like.



I hope one of these methods is helpful to you!