It would be very helpful to see your layers panel to determine what's going on here.
Perhaps also an explanation on how you tried to implement the clipping mask - what's on the bottom? If you want it to match the shape of the kangaroo, IT needs to be on the bottom of your clipping group. Also, it looks a bit like if you DID use the kangaroo on the bottom, your mask may not be fully black. Dark grays will create translucency like this. Please make sure the mask is black and white, and if you want the edges to glow, they should be small gradients from the white to the black.
I used Kangaroo layer (Linear Dodge (Add) ) copy 3 times, Gaussian-blur: 5px, 250px, 500px to glow it. Then, I applied Hue/Saturation, and it appeared the rectangle line (frame) of this Kangaroo. Can you help me hide/remove this line? I tried some ways, but no result