Just up to 100kg (looks like 80kg but there's two 10kg plates on there) and although I'm not struggling with the weight I want to iron out any issues before I get heavier.
Get Mark Rippetoe’s book - it answers all questions. I am far from an expert but your back seems rounded slightly. You don’t seem to have set up your back - it looks loose. Head should stay down so vertebrae in spine and neck are in one line.
Could I get a form check for deadlifts?
Just up to 100kg (looks like 80kg but there's two 10kg plates on there) and although I'm not struggling with the weight I want to iron out any issues before I get heavier.
https://streamable.com/h9pb0v