How to Make Beer Look Amazing in Photoshop by Phlearn
Product photography can be very difficult to master. Every highlight, shadow, and reflection show up in perfect detail and can make or break an image.
In this two part series Phlearn.com show you how to take a normal photo of a Guiness and make it really stand out. You will learn how to cut the beer out from the background, how to create highlights on the glass, how to give the beer a proper "head".
Read the full posts with more info here: PART I & PART II