how to make a cone surface, or a circle grill.

hi im new at this plug-in, and i have to do a cone surface kind like the one on this video

https://www.youtube.com/watch?v=ctDW6g8tT3U

i am kind of lost, i think i know how to start but then how to put the cones in a way that they dont be so regular and look more irregular, like on the video, like make a grill of circles, it would be so helpfull. thanks everybody.

saludos !