Swim workout

Ok so i did a swim workout, i belive it was 750 yards plus 400 approx of kick board.
I think this is down to a technique, I have gotten better but still below average.
This is what I have to do
1) Keep body afloat with hips high and not slanted
2)Head not too down but at 45 degree gazing slightly forward so that ears and
forehead is in water but top of head is forward
3) The hand coordination, yes thats an issue, I need the hand to finish such that when i finish the pull, and take it forward, pinky comes out with elbow high palms facing out and thumb side and fingers enter water and then stretch it. In this way the shoulder goes front and the pulling hand shoulder is back. This is the coordination. Second the pulling hand should finish such that imagine I am scooping and throwing sand behind, so the pull finishes at the back pocket.
4) I should alternate breathing on both sides, every three for relaxed and every five for speed. Also for speed rotate the shoulder faster.

Bottom line, I need to focus on technique and get faster with less effort. I am still 40% slower than my peers.