In the first picture, the bride and groom are facing, with uncertain smiles, a church filled with relatives and friends. (Para. 3)
Meaning: In the first picture, the bride and groom with uncertain smiles are facing a full church crowded with relatives and friends.
Also notice that the phrase "with uncertain smiles" shows that the couple were not confident or sure. Their strained smiles show they are not certain about this marriage. As you read on, you'll learn that the couple's mothers and some relatives were not happy with the marriage.