Several things here. First, your wrists should be straighter, right now they're rolled back too much. Your elbows should also be a little bit more forward.
You generally need to "get bigger". Before you unrack the bar, and especially after you step back and get ready for the first rep, lift your chest, swell yourself up, look up a little. Squeeze everything, particularly your thighs, butt, and abs. Work on your timing between the hip snap and the start of the press - the hips snap forward, the bar dips, start pressing. And press UP, you're drifting forward and around your head. Doing the foregoing will take care of most of it. Dialing in your form will add a dozen pounds pretty quick.