I didn't see any many galaxy/nebula brushes floating around, so I made my own! (ﾉ◕ヮ◕)ﾉ:･ﾟ✧:･ﾟ✧ Hope someone find it helping ;v;

You have to add detail and effect by self, but it's pretty easy!! Maybe I make tutorial on it later ;v;

I suggest detail and blend layers on luminosity or addition!! Use bright colours!

FOR BLENDING:

I suggest using a watercolour brush on following sets:

Size: 26.0
Min size: 60%
Density: 100%
Spread: 50%
(No Texture)
Blending: 50
Dilution: 50
Persistence: 80
Keep opacity: yes
Smoothing Prs: 50%
+Advanced Settings:
Quality: 2
Edge Hardness: 0
Min Density: 0
Max Dens Prs: 100%
Hard <-> Soft: 100
Dens: Yes Size: Yes Blend: Yes

FOR DETAILING:

I suggest using a brush on the following sets:

Size: 100.0
Min size: 3%
Density: 54%
Spread: 100%
(No Texture)
Blending: 49
Dilution: 0
Persistence: 80
Keep opacity: no
+Advanced Settings:
Quality: 2
Edge Hardness: 0
Min Density: 10
Max Dens Prs: 49%
Hard <-> Soft: 0
Dens: Yes Size: Yes Blend: No

TUMBLR LINK: http://lacedupinshame.tumblr.com/post/96007608908/i-didnt-see-any-many-galaxy-nebula-brushes

----CRITIQUE NOT WANTED----