Yellow Supernova-Blue Nebula

I got the yellow supernova from
[link]
and everything else from graphicriver at
[link]
I don't know how to follow a tutorial for Photoshop when I am using Photoshop Elements because the layers don't seem to work the same way. So I went to graphicriver to download a nebula. I used one of my gradients to change its color slightly. I also cropped, copied, and pasted some other elements from the graphicriver selection, and re-colored them. Then I copied and pasted one of the yellow supernova from the source above.
Feel free to use this as wallpaper if you want.