Hi there. Any pros here? I can't fill the heart (additional tasks) at level 19. I have to take photos but it seems there are not enough oppurtunities to complete the bonus task. Any tipps?

Hi there! I'm playing at the difficulty Hard and am trying to have 3 stars on the levels B. I try to do combos of check-out and of orders, but I'm failing to have the third star each time!! Does someone have other tips than combos to offer me? It'd be helpful :)...