Installation:

Download ReShade from ReShade.me. Open it, select the DragonAgeInquisition.exe and DX10/11. Download the shaders. Then take my files and drop them in the root folder with the DragonAgeInquisition.exe and merge if asked. You'll see a message on screen if it worked. Select the preset you want from the dropdown menu.

Credits to Crosire for making ReShade, and Marty McFly, Lucifer Hawk, CeeJay.dk, prod80 and others for the shaders.