Some tips on how to improve sentence flow.
Sentence length varies hugely during the story. It is essential to know that the use of short and long sentences adds up to the story and adds emphasis.
Blood. Agony. Fear. These single-word sentences make reader pay attention, highlighting the current situation. These usallu consist of words that describe five senses or simply concentration on small details. Minimal use of these will have a big impact.
It was a hot and sunny day, hence Jenna decided to buy an ice-cream. This is an example of complex sentence that simply tells us the story, not making a particular emphasis on Jenna's actions.
Behind Sharon, I copied her sliding then dipping under the limbo rod held by the patrons.