One thing that's interesting about this topic is that properly prepping a leaf for wrapping is difficult to shoot a video of by oneself, sans a head- or chest-mounted video device. Both I and webmost have made such videos with such devices, but, for example in my case I've uploaded 100s of videos of me wrapping, but only one or two of me prepping wrapper leaf. Yet prepping the leaf is the most fundamental aspect of this question of how to roll a smooth cigar. Because wrapper comes in all kinds of states (from powder-dry stick to somewhat flexible flat leaf) and it has to be brought to a state of strong stretchability so that it can be properly stretched onto the bunch during the wrapping process. So people end up with these (false) ideas that they need a flat, smooth wrapper to end up with a smoothly wrapped stick. In fact, unless it's glued down with water to a metal surface such a flat wrapper has probably had the "life" already stretched out of it and it'll make a worse-constructed roll than a leaf that is properly prepped and lying there on the table looking all wrinkly, springy, and full of life.
If I enjoyed wearing my GoPro head harness then I'd make more videos about what goes into prepping a leaf. But I don't get paid for this s--- and rolling with that thing on my head is a drag.