There are some serious flaws in all of your lifts (especially the bench press and deadlift). I suggest you reread the SS book again and look up Alan Thrall's how to videos on YouTube (which really helped me) and start with the bar.
Here are some specific problems I've noticed:
Squat: not breaking at the hips, you're looking up (dangerous for your cervical spine)
Bench: no lower back arch, no leg drive
Deadlift:squatting the weight instead of driving your hips back, hyperextending lower back
Overall: you seem to be loose on all of your lifts
Well this is essentially why I made videos, to make sure I wasn't going down the wrong path with my form before things got heavier.
I'll admit that eventually I started skimming the book since it's pretty hefty, but I'm thinking I may go back to reading it indepth, probably focusing on one exercise at a time. It is nice to have a video recommendation too, I used a few for a bit of reference but perhaps I should watch them more often, and possibly compare my own videos to what they show side-by-side.
This also means that I'll probably need to figure out a decent way to mount my phonefor days I'm mostly alone (I often workout during the gym's afterhours, and even when it's during staff hours they're often handling business or helping other members with consultation.
Anyways, I'll make sure to take this as an eye opener and work to improve. I appreciate the critic.