You're not knees all the way forward until the bottom of the rep. Get them forward earlier, all the way forward by the first 1/2 - 2/3 of the descent, then keep them there for the bottom of the rep. Once they are set, the bottom of the rep is to sit back and bend over. You also need to shove your knees out better - keep them out over your toes. Don't lift your elbows so high, you're over-doing the raised elbows, which we've seen a lot of lately. Finally, you might consider moving the stands away from the wall a bit - you're kind of close to the wall which can mess up the gaze point.