In this tutorial we will create a flowing liquid effect in Photoshop.
We’ll use for this an image of a overturned glass and make it look like
the contents of the glass is spilled on the surface the glass sits on.
Make a photo of an overturned glass on a surface, just like in the
image below, or download one from a stock photo website. I am using a
free stock photo from stock.xchng. You can download the image here. I flipped horizontally the original image.