My first writing tip couldn't be my first if there's only 1 total. So I have made another! This one is about something I see go around a lot.

Dialog doesn’t always need a descriptor.
Biggest offender:
“Said”

“Some words,” he said.
“More words,” she said.
“Example dialog,” he said.
“That example dialog is terrible,” she said.
Then he said, “Let’s put the word at the other side of the sentence.”
She said, “I’m getting really sick of seeing the word ‘said’ at either side of the sentence, really.”
He said, “It’s only for the example.”
She said, “Let’s end the example then.”


Stop that

There are a million other words at your disposal. Use them.
Although personally, I would say that overusing them is also a crime:

“Let’s use other words,” she suggested.
“That’s a great idea,” he exclaimed.
“Can I ask questions in this example?” she blurted.
“Go ahead,” he yelled.
“How annoying will it get?” she chortled.
“Probably a lot,” he screamed.
“Maybe we should end the example then,” she cried.
“That’s a good idea,” he roared.


:/


Here’s an idea:

Actions!
They can be both the building blocks of the scene, and designate who is speaking.

“Is this example better?” she asked.
He turned to her and shrugged. “I’m not sure yet.”
“When will we find out?”
He looked away, thinking. “Soon enough, I suppose.”
She looked down at her watch. “I hope so, because we’ve been at this a while now and it’s getting late.”


Use this knowledge wisely.