Sentence 1: Katie was sixteen when she started her first job as a waitress. 
 Sentence 3: She had trained, and thought she'd be able to carry the tray 
 Sentence 4:  But on her first order she overbalanced, and the tray crashed down 
 Sentence 5:  Katie realized she had a lot more to learn about being a waitress 
 Option 1: She was excited to start, and her first day went perfectly!. 
 Option 2: She was excited to start, but also slightly nervous.