Mask Issue: Can't reveal second layer by drawing with paint brush...
So I'm trying to create a BLUR effect on this png file and when I try to reveal the bottom layer by drawing on top of it with the paintbrush nothing happens. I just want to create a glow effect on the image that's it. And I saw how to do it on youtube following these steps. Photoshop CS6 - How to soften an image - YouTube
If someone can quickly tell me what I might be doing wrong I'd really appreciate it. I'm in a bit of a time crunch.

