Need Stroke Advice (Video Included)

I've been practising TI for about 2-3 months and would like to get feedback on my stroke.
https://www.dropbox.com/s/6o4vkgstko...b%202.MOV?dl=0

I can see multiple things wrong but I'm not sure what I should focus on fixing. Appreciate any help with drills, etc..

I'm 5'9" and take about 30 seconds per lap (25M) at 22-25 SPL. I can swim 10+ laps with this stroke without getting tired but would really like to make my stroke more efficient and faster