Your stance is too wide, your toes turned out too far, you are lifting your chest along with you chin, and twisting a little on your ascent. As you mention, you need to go a little deeper, too. "A dull left femur pain" is very vague, so I cannot help with that. However, I can say that the spinal overextension caused by lifting your chest, coupled with the twist you do worries me a little. So, what to do?
Narrow your stance about two inches. You want shoulder width. Point your toes out a little less. Keep your chin down. Think of keeping your head out of the lift. Drive up with your hips. The whole way. Not just out of the bottom, but all the way to the top. Go deeper. All this will probably require taking a couple of pounds off the bar, maybe 10 or 20. A narrower stance, less overextension, and staying with your hips may help your twist. We shall see.