You would have to make some sort of
vessel and lower the temperature inside to its dew point. You might need
some sort of planetary body on the bottom with an hydroponic system
running water through it to add water vapor to the air.
Set it in the daytime sun. Daytime heating can evaporate water from the
surface, along with transpiration from plants it should begin to form
some kind of cumuli-form cloud.
This is how we will Inhale and make new material for arrogant folks like you and we Q!