Your setup needs adjusting. Yes, your hips should be higher. Your knees should not start in front of your shoulders. So pull your knees back (start with your knees under your shoulders and see how it looks), raise your butt, make sure you keep the bar snug against your shins. Your arms should angle back in slightly towards your body instead of hanging straight down. Right now you can get away with these faults because the weight is still light for you.