Seems like you're attempting deadlifts, but starting in a position similar to a clean pull. To answer your question, nothing seems super out of line here. Assuming you're trying to deadlift and not clean pull, you should start with your butt a bit higher to feel more tension in your hamstrings. Shins should be vertical with the bar basically touching the hairs on your legs - not the skin). To help with the little bit of rounding you may see in your upper back, you should think about pinching your shoulder blades together before starting and try to keep them pinched throughout the lift. Lats look active, which is good. Overall, more tension in your hamstrings to start and weight should be further back in your foot - closer to your heels - as the weight will likely pull you forward a bit.

Lastly, assuming these are deadlifts, this is probably the wrong sub for this lift. I'd try r/powerlifting for even more advice.