We were re-taking shots for a couple of techniques in our book, Winning on the Ground, and Hans very kindly offered to take them for us. He was extremely polite not to add,
"Because it's obvious YOU people aren't professionals!"
He got some amazing photos including some we ended up not using for the book. What happened was Ronda and Manny started out doing the techniques we needed and then one of them would say,
"How about this one? This is a good move."
When I went through everything when Hans sent me the photos, I saw that Jim already had included some of the techniques in the pictures. We're thinking of writing this up as an article though, because it came out so well.
Here is the beginning - your opponent reaches over you and grabs your lapels. There are a number of judo moves the person on top can do from here.
You might even want to fake as if you were going to roll him to fool him into thinking you are going to go in one direction - and then, instead ...
Ronda likes to grab her own gi, to keep the person's arm held tight to her. Also, it leaves her other arm free, making it easier to turn into a pin if he manages to do a forward roll to escape from the arm bar. Personally, I like to grab my opponent's wrist with that hand. One way gives you a tighter arm bar but the other makes it easier to switch into a combination. Suit yourself.