I'm getting asked quite a lot how I do all my nebula work, so I decided it would be a good idea to share some of my knowledge in a tutorial. Now that my semester has finished and I'm done with all the exams I finally found time to do this. Turned out more comprehensive than I expected. The brush I made for this tutorial can be found here: [link]
This is my contribution to the great community here at deviantArt.
If you have any suggestions, found any errors or just got any kind of feedback, please let me know.
I hope it'll be useful.
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Special thanks to !Kirill-Gorshkov for the english Photoshop screenshots and ^Elandria for the Daily Deviation.
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Note: I've used Adobe Photoshop CS3 for this tutorial. It appears that the brush settings menu has undergone some minor changes in CS5. As far as I know, all the relevant options are still available, they just might have been moved to another sub-menu.