Nice background separation and I think your technique is there, especially with the use of long glass for perspective in Balboa Park, but I have to say that from these examples, the background is very dominant and the couple are getting a bit lost. I would like to see examples of both - tight crops, plus the full-length and 3/4 crops shown here. Even at F1.whatever, you still have to watch out for the peeps around them, like the guy seeming to pick a coin up off the ground from behind her rear end on #3. They look like a low key couple and I imagine it might have been tough to get a lot of expression going on with them.
