How do I resize the canvas of a image layer in After Effects? I'm using After Effects CC 2017. I've imported a PNG image with transparency, then I added a simple CC Light Wipe effect:



The problem is that the range of the lights produced by this effect are limited to the image size, so it produces an annonying thingy. Is there a way to resize the canvas of the layer of the image or another way to solve this (avoiding the need to resize the image canvas using external programs like Photoshop)?. 

I really tried to find out the answer researching in Google before asking here but I only found questions about resizing the entire compossition in the compossition settings...
Add an adjustment layer on top (right-click in empty area of the layer names. Go to New menu) Apply the effect to that.