A variation of a set up for the V-1 arm lock that is pretty easy to get from the mount position. You'll need to be careful of getting rolled with your arm behind your opponents head.
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I start in the mount position on Eddie
I put my right arm in between Eddie's left arm and head and reach it under his neck. - You are losing the right arm as a post so be ready to defend the roll if your opponent tries to reverse you.
Using my left hand, I push Eddie's right arm to the mat
With the hand that is behind Eddie's head (my right) I grab Eddies right wrist
I switch my left hand under Eddie's right arm and grab Eddie's right wrist
I step my right foot over Eddie's stomach to his right hip
I drop my right knee to the Mat
I sit out on my right hip
I reach my right hand into Eddie's right armpit
I pull Eddie's head into my chest as I pull his wrist out and away from his body to finish the submission