It used to be rather tricky trying to adjust certain facial features in Photoshop in a convincing manner, but Adobe recently added a lot of semi-automated features for doing so. This helpful video tutorial will walk you through the tools, showing you how to use them and giving you a variety of tips for getting the best possible results out of them.
Coming to you from Aaron Nace with Phlearn, this great video tutorial will show you how to use Photoshop's Face-Aware Liquify tool. Before this tool came out, manipulating facial features was much more difficult, but with it, Photoshop generally takes care of all the most difficult parts, leaving you to simply adjust at will. Of course, with such ease in making significant changes to a person's appearance, it is very easy to go overboard, so be sure to err on the side of being more conservative. In particular, if it is work for a client, be sure such changes are those they would actually like. It helps to keep checking the before image a couple of times as you are making adjustments so you know just how far you are taking them. Check out the video above for the full rundown from Nace.