The Trap Guard is a great tool to have in your game, especially if you don't like playing traditional closed guard. It keeps you safe (even from punches) and will set up a ton of attacks and sweeps.
In part 2 of the series, Professor Steve shows how to set up the Kimura once you have the guard locked up. There are plenty of other submissions from here, but this is the easiest option. Because of how the guard works, finishing from here is much easier to finish than normally. Plus, you stay safe the whole time and don't give anything up by going for this.