Technique is there. However, if you emphasize on the people besides the couple and the couple themselves to have connection (such as eye contact) then the picture will tell story by itself and become more believable.

#1: You can see 2 kids playing while the couple marches in, both elements doesn't look connected. Just an example.

Good luck!

No worries. Just keep trying until you achieve what you want. You don't usually nail it the first time, but you can continue to practise to nail it.