Critique my 50 Fly, please

‪VID00003.MP4‬‏ - YouTube I liked the time, but the more I look at this the more I don't like what I see. A few things I noticed. I felt like I had a great reaction time, but by the time I break the surface the guy two lanes over has already taken a stroke and is a yard ahead. I kni it's hard to tell without seeing the underwater, but did I go too deep/stay under too long? Obviously did not go down the center of the lane, that's a problem. Looking at my stroke the way back it looks to me like I am taking my arms out of the water too far, driving my head down and creating a "V" Am I seeing that right? If that's the case, what drills can I do to fix that in practice. Anything else?