First of all we need to open Adobe Photoshop then create a new file.
Set the background and foreground colors to their default values by pressing D key. Then go to Filter - Render - Clouds and generate some nice clouds.
Then go to Filters - Render - Difference Clouds to have some fibrousines in our nebula. If you want, you can repeat this step few times by pressing Ctrl + F after generating Difference Clouds.

Now we need some color for our star dust, so press Ctrl + Alt + ~ to load the luminosity as a selection, grab the gradient tool, set to colors in the same range (a light blue and a darker blue in my case) and drag from corner to corner to fill the selected pixels.

Repeat the last 2 steps in another Layer and this time change the gradient color (I went for green) then press Ctrl + L to bring up the Levels dialog.

Play with the sliders until the result catches your eye and hit OK, then set the blending mode of this Layer to Screen.

There you go… a neat space scenery created in less than one minute. Of course, some of you may say it lacks the stars, but I would have passed the one minute limit of this category. I will deal with the stars in a future tutorial. Until then, keep safe and have fun.

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