 |
This tutorial should show you the creation of naturally looking lightnings breaking the clouds. |
 |
First, create a new image and fill it with a gradient like shown here. I've chosen 0:0:0 as foreground color and 191:191:191 as background color. |
 |
Now, create a second layer above the gradient. Set its mode to 'difference'. Render a plasma <Image>-Filter-Render-Clouds-Plasma... and desaturate it. |
 |
You should get something like this. Try out different plasma to achieve the desired shape. |
 |
Merge the both layers and invert the colors. |
 |
Here comes the tricky stuff. You have to play around with levels. I propose to start with the values shown here. |
 |
Your (possible) result. |
 |
Play around with color levels and/or curves to get a blue shining into your image. |
|
That's all! Rotate your result, blur it, rescale it... Have fun! |