no problem man, when i first started the biggest mistake i made was i used to land in the armbar with my hips far away from his body...meaning i was too far off.
also, if hes super flexible and not tapping, you can take his arm and put it under your armpit...but be careful not to hurt him since thats super tight.
you can see it at 1:55 of this highlight, btw watch the highlight too...its really good!
YouTube - Paulo Sergio Highlight