Armbars

From side control:
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Start from side control; the arm nearest the opponent's head gets collar grip right at the back of hir neck. Other hand- pretend you are digging for opposite collar grip, but it's a trap! When opponent puts up arms to defend, armbar. What seems to be working best for me is to use my chest to put weight on and trap opponent's arm across his chest. Then take plenty of time to carefully secure the arm. Grab the pants before sitting back. Keep your foot that's on that pants side, on the mat- don't put it over the person, The pants grip will prevent the escape.

You can grab your own lapel to try to force the armbar.

If opponent locks hands together or wraps arms together to defend:
First, you have to let go of the pants and put your second foot over the person. Put it high enough so that you can trap the arm between your knees. Now, take that free hand and grab the wrist, use your entire body to force it in a curving motion toward opponent's head. It hurts at wrist/shoulder, so s/he will let go. (Do this carefully, slow and controlled). Continue the arc back to the armbar.