Half of the time, I couldnt tell whether Keith was still on Matt's cock, or in Sarah's vagina. A little more from Keith's perspective would be nice.

As for a suggestion, perhaps Keith wakes up still in Sarah's pussy and he is able to crawl out. Just as he squeezes himself out of her vagina, he tickles her, and Sarah wakes up. Sarah notices Keith, but is still in the mood for some fun, so she wants Keith. Keith however cant respond to Sarah becuase Matts cum is dried up and gagged Keith's mouth so he cant speak. Then Sarah takes Keith for a ride which you can decide what that is. Its up to you.