Easiest explanation of layers.
Lets look at this image if I did it all in layers
Background
Ship layer
Planet layer
Now I could do many things here. One I could add effects over the planet layer without effecting the rest of the image. Also I could bring the planet layer forward to have a ship passing from being the planet.
Basically layers are just a great way to work on a highly detailed image with less worry of ruining the entire thing. I've got a few standard backgrounds now with 5 planets, 6 nebulas, and 3 suns, all in one photoshop image, all I need to do is select which layers to have visible or not and I can create a crap load of different backgrounds from a single image
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Warlock
DeathAngel SquadronCO
Do or Do Not,..There Is No Spoon
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