Hi Cathy!
The barking looks great!! Isn't it great how Jake picked up on things! I love hearing stories like that. As much as I love training, I love to hear about dogs making decisions on their own, based on their own thoughts. I just love it!
One thing I've got to point out. Notice how you are moving your hand before your mark. What ends up happening is that the dog cues off of your visual hand movement, instead of your audible mark. Resulting in a outcome where the dog releases itself upon the sight of a moving hand.
You can actually see her cue in this way on the video. So, I would practice marking first without the dog, and then when you feel like you've got it almost second nature, which shouldn't take long at all, you can reincorporate the dog.
Again, the barking(which is what we are looking for) is great! But, I would address the marking before Asia develops a habit.
Thanks, Cathy!!
Mark