While it's generally accepted that it's more important to have a perfect body line than a great pull, to really reach your potential, you're going to need both.
Expanding your personal swimming horizons is key to maximizing your swimming.
To make sure the focus stays there, release the hand earlier than you usually do, and get it back out front again. Continue to experiment to find the best position, and don't overdo it. Body position and your overall shape in the water are still more important than the catch. Just don't forget that you still have to connect to move forward, and a slight lift of the head shouldn't impact your body position.
合适的头部位置不是眼睛完全朝下也不是眼睛完全朝前,而是比眼睛朝前稍微低一点。---A slightly elevated head position.