Comments -- its unfortunate (or perhaps instructive) that your clip is right next to the one called 'This is XingYi Quan' from kmfdm543. I am no great expert on Xing Yi, but the contrast is wide.
First, your shoulders are way too stiff and I see no energy travel from the ankle up, which accounts for the obvious lack of power on the very very difficult opening palm strike, which is the Xing Yi trademark move. If you cannot do this right, you cannot do the rest right, especially the even more difficult upward twisting phoenix eye strike.
Perhaps purely as a training aid, when doing this palm strike, exagerate the downward movement of the palmheel a little more, without straightening your elbow too much. Start the movement by a rapid sinking of the shoulder and elbow (without any further bending of your knees, a natural reaction) and end with a relax drop of the palmheel.
As for the energy travel from the ankle up, try this training aid.
Place a chair against your ankle, feet about two feet apart. With a fast outward twisting flick of the ankle, rapidly flick the chair away and 'transfer' the reactive energy thus generated up the right side of your body (if using the right ankle) to the right shoulder, across to the left shoulder and bring it to the outer surface of the left palm, like giving someone a relaxed back slap. Accompany the movement with a fast snappy twist of the head towards the left.
A once asked a Xing Yi practitioner how many times he does the palmstrike training alone, he said 500 times per session.
I'll rather be happy than right, anytime.