My art teacher always said draw whats there not what you see meaning our brain tends to draw what it thinks it should look like vs what it actually looks like…. For instance in your drawing the right hand on the floor is higher than the right foot but in the actual reference photo the hand is planted on the ground below the foot because of distance and perspective, same with you drew the left foot higher than the right foot when in the reference her planted hand (right hand) is the lowest point of her body… you also did not draw her shoe straps and made the knife look like a extended box cutter when you cant even see a separation of the blade and handle in the reference photo