A Half-Hidden Necklace

Does anyone else struggle with showing necklaces correctly with button-down shirts like this? I find that sometimes in the morning, the necklace looks perfect; it is laying across the shirt at the perfect length and I'm happy with it, and then I look at photos at the end of the day and it isn't even close to how it started. Any advice? 

Tank: J. Crew
Pants: Nordstrom
Wedges: Nine West
Cardigan: H&M
Necklace: Nordstrom (Top 10 item)

So far so good as far as incorporating a piece from my Top 10 into my outfits. I'm a bit worried this week, as I'm headed to Boise Tuesday-Thursday. But hopefully I can still make it work!