Not bad. A few things to work on.
I think you're right on the border as far as depth. Try to force yourself an inch or two lower to remove all doubt.
Keep your head down. You lift it right as you start your descent.
About halfway up you tend to hinge -- your hips keep moving up but your back angle becomes more horizontal. Don't lift your chest, but try not to hinge in this way. Use your hips to drive your chest up.