This is only from seeing the picture you posted, but to me, you are too far forward. Maybe the video shows something different. I know for a fact you can shoot a deer in the "x", and not recover it, especially if they quartered even slightly. I killed a doe in 95 that I didn't think I'd recover. I made an absolute "perfect" shot, watched the arrow blow through her. She ran 100 yards to another woodlot, turned and looked back for several minutes and then walked into the woods. I knew where I hit her and knew she should have dropped dead within seconds. I found my arrow, very little blood and none on the ground. I left. Came back the next morning with my beagle on a leash (it was illegal to do back then). We worked the downwind side of the woods and he eventually led me to the deer. It was still alive! I had shot her at 5 pm, and found her at 11 am the next day. She was too weak to get up, and I finished the job with a knife...don't want to do that again! When I field dressed her, I looked at the lungs closely. This is the part NO ONE believes....the Thunderhead had gone through the top of both!!! I don't mean it knicked 'em, it went through them! The top/front portion of the lungs apparently does not shut a deer down immediately.
Another expample... Sean, (BEC) shot a dandy while hunting with me a couple of years ago. He shot the deer at 26 steps, saw where he hit, watched the deer for some time afterwards and swore it was a perfect shot. Tight behind the shoulder, half-way up. He immediately told me the deer didn't act like he was gonna die regardless of where the arrow was sticking out...and stuck in the offside shoulder. He was right! We found the arrow and trailed the buck for a few hours. He never bedded. We got pics of him on a BuckEye Cam two days later chasing a doe. A day after that, I got a night time pic of him and when blown up, the arrow hole is visible...and it is right where I shot the doe in 95!
These two cases are why I am a big fan of hitting them 5 inches or so behind the leg...lungs are bigger there, and you're away from the shoulder. Also, the pocket of skin around the shoulder can hold a LOT of blood and make tracking very difficult even on short trails.