Some people are born writers, but we can all learn how to write. Artful and flawless use of language is important in storytelling. It can make an average piece of writing good, and a good story one that lingers in the reader's mind. You need to know how to write dialogue, which words and voice to use and how to create rhythm in your writing.
Dialogue
The way we speak is not dialogue. Everyday speech is full of rambling sentences and ums and ahs that don't flow. Dialogue needs to be better than actual speech. It also needs to be short and snappy to engage the reader. A rule of thumb is three to four sentences for each exchange in a dialogue. To make dialogue easy to read, put quotation marks around the spoken words and start a new paragraph every time a new character speaks. Here's an example:
'It wasn't me,' said May, staring at her shoelaces.
'I saw you running away,' said Mrs Chan.
'I was coming to tell you what happened!' cried May as she looked up.