Clouds

Working on a picture for a school project. How do you make good looking clouds? (They will be seen from air)

https://blenderartists.org/forum/viewtopic.php?t=50903
https://blenderartists.org/forum/viewtopic.php?t=49240
I haven’t tried this, so I don’t know how hard it is. But those are two examples of volumetric clouds, which is what you are probably after, using the ‘TraShadow’ button.
https://blenderartists.org/forum/viewtopic.php?t=51038
This is an example using particles.
Hope these help!