I'll echo what others have said about working on mobility and slowing down. Lots of stretching, hurdle walks, quad rock backs, etc. If you want some more ideas, I got 'em in spades.
You've got really long legs, though, so don't sweat it too hard if you don't ever get all the way down. Fuckers with short legs, like yours truly, can get low more easily. That said, you're folding at the waist too much. Keep your shoulder blades together and chest open and sit down, not back, if that makes sense. Your butt's gonna go back and shoulders are going to come forward somewhat as you fold up, but try to keep your torso pretty upright. Elevating your heels a half inch or so with something hard, like 5lb plates, helps with depth, too.