INSTALL THE ACTION SET
Go to Window > Actions to bring up the Actions Panel
Click the menu button located at the top right corner of the panel
Select "Load Actions" command
Locate and load the downloaded .atn file ("CaricatureStudio.atn")

OPEN THE TEMPLATE FILE
Open the CaricatureStudio_Template.psd file you have downloaded
Follow the on-screen instructions


You can try it out with the photo used in the preview images:
https://www.pinterest.com/pin/304485624782669932/
