Transition when changing characters moods:
“Ha ha ha,” Paula laughed. “You think you won. Wrong.”
Paula fired a bullet into Jessica. She gasped. The weapon cracked like a firecracker. It smelled like old fourth of July powder. A thin cloud of smoke waved in triumph from the barrel.
“I’m sorry,” Paula said, throwing herself over the body of Jessica. Shock registered on her face. Tears rolled down her cheeks. “I didn’t mean it. I swear. I’m so sorry. I love you.”
Transition when characters share a mood:
Paula fluttered her wings -- a mad puppet controlled by invisible hands. A sudden blast wiped the sky empty. The giggles of the kids on the playground didn’t reach that far and the loneliness choked her.
Her loneliness weighed on Jessica like a carcass thrown on top of her, a heavy bag of bones she heaved around. Ah, loneliness. So empty, so cruel.
Contrasts with two POVs who have never met. Use logical relationships.
Jessica slipped into her superheroine uniform and went airborne in the blink of an eye. “To the rescue,” she shouted. "You want to be rescued, by me." Yep, whoever it was.
Paula finished filing her horns to a sharp pin, and then slipped into her scarlet stilettos. She deployed her wings and made it for the sky. Some superhero had better not show up today!
The two POVs deal with the same personal problem.
Jessica stooped in the middle of her flight; the earth magnetism interfered with her flying, pulling her back down like a stretched gum. If she didn’t reverse the pull, she would crash on her way down. But if she reversed the pull, the people on earth would come floating all around her. No way was she going to renounce flying, gravity pull or not. But no way was she dying either. Super powers certainly came with great sacrifices.
Being a villain suited Paula very well. She couldn’t care less for humans anyway. Such bores. They had no power. No freedom. Pushovers, all of them, they were. She could crush them with the split ends of her hair. Now Jessica, on the other hand… Fair game. She flapped her wings, but the force she deployed sent a bunch of cars flying in her wake. The cars’ horns pierced the night with their wailing. Arghhh! Talk about being discreet! Villains were supposed to hide in the shadows of towns, creeping in its cracks and whispering deadly spells. Ciao incognito!
Reusing place, object, sentence:
Paula tapped her feet on the ground. The frozen snow cracked under her boots. She’d been stood up.
Jessica tapped her feet on the stairs. The frozen snow cracked under her high heels. “He’s not going to stood me up for her,” she thought mildly angry. "Of course not."
The dog ran after her and she perched on top of a small wall.
“Back off,” she yelled at the demon.
Three hours later, Paula still stood on top of the small wall, her voice weak now and her knees turned to jelly. When Bryan finally showed up and gathered her into his arms, she elbowed him, still picturing the demon in her mind.
“Back off, back off,” she whispered between breath, her eyes closed, her arms encircling her body.
“It’s me,” he murmured in her ear. "He’s gone.”
Luke, Pearl. "Transitional Words and Phrases in Fiction: 4 Writing Tips."
Boone, Martina. "Narrative, Transitions & Maintaining Forward Momentum in Your Story."