Nickia, the guys above have hit on important issues. Stance width is one. You put a picture of Klaus up in another thread. In that picture his skis are very far apart, and I have a suspicion you may be trying to ski copy that. The problem is you are not skiing with the high edge angles he is, so your wide stance is actually counter productive. As softsnow says, bring your feet closer together. By doing so you won't have to ski as contorted to achieve equal edge angles, and balancing on your outside ski will be easier.
You're also aft balanced, and way too heavily weighting your inside ski. Over weighting your inside ski is evidenced by your outside ski's tendency to loose pressure and track away from you. At one point in the video you become very spread eagled because of it. Part of the reason you get so aft and inside is that you're creating counter by dropping your outside hip back. Getting aft and inside when doing that is very common. Notice how much inside tip lead you have,,, this is also a byproduct of dropping the outside hip back. The wide stance just adds to the likelyhood of these issues appearing.
Repair it by first by narrowing your stance, then driving your new inside hip forward as you transition into each new turn. This will create the necessary counter properly, and produce the fore balance state you need. In doing this, be sure to lead with your inside hip, not your inside foot. Your inside foot should simply move forward in appropriate cooperation with the forward driving inside hip, out of need, and in a minimal amount. The result will be functional inside tip lead, much less than you have now.
Drills you need to practice extensively are lifting the inside ski, and lifting the inside tail. Lifting the inside ski will remove the dependancy you currently have on weighting your inside foot, and lifting the inside tail will combine fore balancing ability to the outside ski dominance lifting the entire inside ski develops.
Good luck, and get to work!