quick and easy wave using the "Warp" tool in Photoshop.
First, you will create a vector rectangle using your shape tool on your canvas. The one that I am using for this tutorial is 3600 pixel wide. Do NOT rasterize your rectangle. Working with it as a vector will prevent your edges from becoming jagged.
Once you have your rectangle, go to the drop down menu at the top and select
edit, transform path, & warp.
Now you will see the 2 edit nodes on your image. You can pull on the left node (up or down) to create a "wave" effect.
You can also, pull up or down on the node on the right to give even more curve to your wave, if you wish.
These curves are fun to use to create the look of an ocean wave or to add a little curvy flow to your page! Here are a few examples of pages using a "wave"!
That's it, how easy was that?!
I hope you have a great day :)