I'm assuming these were done for friends. Just keep shooting and keep studying how to shoot portraits.
A lot of people in your position worry so much about getting enough shots that they are just constantly shooting so they have a ton of photos but not a ton of good ones.
A shoot like this you need to go to the location, even if its just your first time and you're with the couple, and look for light. You have to be able to scan your surroundings and understand where the good light it and how to make it work to your advantage. You have to be able to see where and how to place your couples to take advantage of this light.
Every shoot I go on my couples always comment how they can see my brain working because as we walk around I am constantly scanning my scene to see how it can work for me.
Dont just go to a location and fire away. Place your couple where you want them. It doesnt mean the shot needs to be set up. If I have good light in a walking path I might start them 20' away in bad light and not start shooting until they walk to where I want them to be.