Push press- You need to get the bar up higher on your shoulders, and drive your head THROUGH at the top, youre staying behind the bar, creating a huge lever arm costing you lots of poundage on the exercise. I would imagine you can get very close to 185 for some reps once you fix it.
hang clean- dont round your back when you descend, keep chest out and push your HIPS back. If youre going to think " jump", then " jump" off your HEELS. There is alot more, work on those first though and re post. Too much to think of at a time and your head will explode.
squat- either use a box, below parallel, or front squat.