A relative of mine created a logo which has a backlight effect behind it.
He is much better at Photoshop than I, and I only know a few of the basics.
Here is the PSD file of my image, with only the background layer (I believe) and the backlight-effect layer: https://goo.gl/XNJ8AK
And here is a view of the image:
If you look at the top, you can see that the top of the backlight-effect circle has been cut off (I edited this image by making both the canvas and the 'base' layer (i.e. background colour layer) bigger to show you what effect saving the original image with a smaller canvas size has done to the backlight-effect circle).
I tried to mimic the properties of the backlight-effect circle layer (called 'light copy' in the aforementioned PSD file), by adding the 'fx' - 'Color Overlay' effect to a newly-created layer, and modifying the settings so that they were the exact same as the original backlight-effect circle layer. Of course, the layer was invisible (yes the 'eye' icon was visible next to the layer name). I'm not surprised as, when I tried making the mimic layer, I never drew a circle or used the brush tool or anything like that.
I want to fix the backlight-effect circle so that the top isn't cut off, AND I want the properties to be the exact same (as the layers that make up the logo go over it, and it acts as a perfect backlight effect).
Is there any way to identify how the layer was made? I don't want to know how to make a 'similar' effect - I need to know how to either simply fix the original layer or duplicate it with the exact same size, color, opacity, hardnes, etc. as the original one but with the top part intact.
What I don't understand is, if I click on the 'Color Overlay' fx effect's eye (to hide it from visibility), the backlight-effect disappears. But how do you make a circle shape in a 'Colour Overlay' fx effect? Shouldn't the 'Color Overlay' setting just change the colour of the backlight if it's made invisible (i.e. if you click on the eye) and not make it completely disappear?
Anyway, I'd be very grateful if anyone would be willing to take a look at the PSD file and either show me how to fix the original layer (so the top isn't cut off) or how to recreate the layer with the exact same properties. Because I don't even know what to search for on how to fix this! (I tried following a YouTube tutorial on how to create a backlight-effect circle but it didn't instruct me to use the 'fx' - 'Color Overlay' effect - it told me to use the brush tool instead?).