Compositing in Photoshop comes in many forms, from product and portrait enhancement to fantasy-style images. Every digital artist will have their own workflow, as there are many different ways to get the final results.
Photoshop
How to Enhance Eyes Using Photoshop

The eyes are one of the most important of any portrait, and as such, they deserve a little bit of extra attention when you are in the post-processing stage of your work. If you would like to improve your portraits, check out this fantastic video tutorial that will show you how to brighten and enhance the eyes in a portrait for natural, compelling results.
How To Create Before and After Animated GIFs for Your Images in Photoshop

Where once editing was a sly activity most people wanted to hide, creating the illusion that the images came straight from the camera, now it’s a generally accepted part of the process (even if it always has been part of the process!) A great way to engage with your followers and show just what can be done with a photo is to show before and after images, so you may as well do it properly.
How to Use Photoshop’s Select and Mask Workspace

Photoshop offers a huge range of ways to make selections for extracting parts of a frame or creating layers masks, each appropriate for different situations. The Select and Mask workspace offers a very straightforward and powerful method for tackling a variety of tricky selection scenarios, and this helpful video tutorial will show you everything you need to know to get the most out of it.