Puffy Cloud effect on Text?

DerpTrain

Making a music video and want to make clouds appear in the sky that spell out words. I have a puffy cloud font, but I would like it to look fairly realistic. Is this something hitfilm can do? I know it can make clouds, but can it add a cloudy effect to text. As in, make it puffier? I'm not sure if I am getting this across. If someone has done something similar, let me know!

GrayMotion

The term you are looking for is "Cloud Typography"

I have never tried in Hitfilm but Blender could be of help for sure.

Triem23

This might have good ideas.

https://youtu.be/7EFXTrHP8CM

FilmSensei

I would use the particle sim.