I did them myself, hubby's half afraid of them because he thinks that he's going to "break" them, lol.
They were so easy in fact, that I wasn't picky about which wing I got or how I held them while doing it. I picked out two with different wings done just to show how I held them. I just slipped the scissors under the back wing feathers (whatever they're called) and snipped off the flight feathers. I'm no professional, and this was the first time I ever clipped wings, so they're not primped and pretty or anything, but it's functional (er, well, non-functional) and it doesn't have an effect on the way they look unless you actually pull the wing out. It probably took me a whopping five minutes to do all five, and that is including chasing one of the whites down, lmao. And, it's much easier now. I was trying to snap these shots and the other white got out. It was so easy to catch them, because they really don't run fast and they don't attempt to flutter away with the wings cut now.
They aren't the least bit impressed with the new "cut", but, well, I don't think much of anything that I do impresses these guys, except when I bringeth food, lol.
I've heard of some people clipping both wings, and others clipping only one. I did one because it's supposed to make them lopsided and less able to fly than a strong bird with both clipped.
P.S. is this Sawyer? I wondered if that was you, but wasn't sure.