1. Serene waits anxiously for her medical report…
2. Jack trembles as the door slowly creaks open …
3. Larry stares at the lottery ticket with his mouth open…
4. Jane slams the door at the sight of her irritating brother when
5. Melissa nervously hides her diary when she sees her elder brother walking into her room …
6. Yvonne focuses on the guy beside her. She realizes that …
7. Amanda screams like a madwoman when someone grabbed her from behind …
8. Jasper switches on his laptop. To his utter disappointment …
9. Danny tried to stop the thief but was stabbed in the stomach …
10. Geraldine waves goodbye to her friend and all of a sudden, she fainted …
11. Max opens his closet. To his horror …
12. Joey runs away in fright when she opens the old wooden door …
#4, #6, #8, #11 are incomplete sentences – not openers. The rest are okay but you need more variety in your content, they’re not detailed enough to grab my attention.