Game Development Reference
Yes, it will look nothing like clouds, and it will not animate, this is just the first step to
see how the light works with your scene.
8. Next, we will be animaing the light to get an idea of the speed and angle we want.
We first do this instead of overlaying the clouds, because both the clouds will be
moving in roughly the same direcion, with a slightly diferent speed and angle to
add variaion, plus we need to see how the cloud textures play with one another in
the editor when it is being animated, not when it is staionary.