Tips & tricks for doing a Valentine's Day photoshoot at home with my iPhone?

Sadia
So Valentine's Day is quickly approaching us & I'd like to do a DIY VDay photoshoot with my son...His 1st birthday is on February 16th and we're taking him to do professional smash cake shots so we can't really afford to go twice in one week just to get pictures done again for VDay! 
Being that it's his first VDay ever I would like to make it special & memorable...I want to do a photoshoot at home but I still haven't gotten around to purchasing a professional camera so I'd be using my iPhone! For the parents out there who take your own pictures at home, I'd greatly appreciate some tips & tricks for pulling this off and making it look somewhat professional and presentable while letting my little man have fun as well! He's very photogenic but it's hard to get him to stay still and not mess with props, lol! 
Here are my thoughts...im currently searching for the perfect 1st VDay outfit for him & I already have a silver sparkle backdrop cloth which I was planning to use along with some VDay props I intend to purchase! I was thinking of doing something with chocolates, rose petals or even hearts...I would love to do a kissing booth but can't seem to pull my creative mojo together to pull it off! Sighhh...
I'm open to all suggestions, give it a shot...help a mama out to make this day special for the love of my life, he deserves it!