Your form looked pretty good to me. Just try to stay tight in your whole body as you're both going down and back up. I'm not saying you didn't seem tight, but that's always something I need to work on, so I'd just pass it on. In any case, your form is better than 90% of the guys I see squatting at the gym. Any tweaks you need to your technique will be minor, and will become evident (that you need them) as the weight goes up.
Keep on squatting
"Generally people can't squat because they're lacking in the 'lower ab' area. As in they need to grow a set." - LtL
"No one ever got big or strong by lifting lightweights" - Carl1174
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Valentin Konstantin Platz