This is a Tutorial to make some Nebulae using my Star Field Tutorial (http://forums.gfxvoid.com/t-4026.htm&hl=)

OK!

set your Foreground Colour to a Sky Blue style one
now after you have made the Star Fields
make a New Layer and call it Nebula
now with your Sky Blue go Filter>Render>Clouds
then go Filter>Render>Difference Clouds
keep Rendering your Difference Clouds until you make a decent enough Nebula looking effect
now change you Blending Mode to Screen
Your Done!!!

Result:



Lets see your's!