Image Overlay

I am trying to overlay an ice texture over my render. The image is mostly white so it should work with transparency. At the moment I am stumped on how to archive this. Help is very much appreciated. :smiley:

Take rendered image to compositor as an input node. Take texture to compositor as an input node. Mix together, send to compositor output node.

Okay so I have tried many combinations already. I have tried every single mix function in the drop down. I would not have posted if I didn’t already try a bunch of other things.

Perhaps you could post a screen grab or demo blend file? It should be quite easy.