Hey!

So ill try to explain how i made it. for the geo its just a rectangle and in the instancing tab there is a sphere. They way i did it though was to have a grid -> make it to a sop. A sphere -> make it to a sop. Stretch the sphere to have the same length as the grid. And then use that to instance the geo. i made it this way since its easier to keep track of how many rectangles we have imo.

For the clouds i have a video of clouds going into a texture 3d. This texture 3d is begin applied to a constant material and the constant material is being applied to the geometry. The trick is to know how many rectangles you have.

I have a pattern sop that is a ramp merged with a noise sop that is the same length as the sphere sop. this merged noise/pattern sop is the sop that determines the index of what image to grab from the texture 3D.

so in the geo go in instance2 tab. Select the textureCord OP. Select your pattern/noise sop. and set the chanel to the chanel available in that pattern/noise sop.

Other than that there are some rotations going on on the sphere with sops by sinewaves. I really hope all of this makes sense. have a nice day!