My friend =Horsepoint made it for me in Photoshop since mine wasn't working at the time. The technique is quite a popular one, basically you use a noise filter then use the levels tool till it looks right... I'll ask her if she knows of a tutorial for it, or if she'll let me put up the one she made as stock. Oh, I also overlayed this stock for the nebula: [link] ...Then drew on a few random dots here and there for bright points, and used a mask gradient to fade the starfield out at the horizon.
It's something I like too, the whole protective/compassionate mother/father to son/daughter thing is such a pleasure to exploit. Especially when it brings together two characters that aren't related by blood It just pulls at your empathy, methinks. ^^