Advanced Spinning Armbar from Guard

Here is a great clip on how to finish the armbar from guard when the opponent is defending.

0:25 Half guard knee shield position
0:39 Kimura grip
0:55 Kimura opportunity
1:04 Opponent postures up
1:10 Hip escape and bring your bottom leg free
1:15 Top leg swings up and over and hooks the far hip
1:28 Invert
1:48 Prevent the rear naked armbar defense by catching the wrist
2:03 Push the arm away and extend the hip
2:25 Make sure you grab the wrist on the arm you're attacking
2:58 If the opponent puts to much pressure, invert again and finish belly down