I mentioned this earlier in my top ten tips.

In every story, it is super important to show and not tell. This can be a hard concept to grasp, so let me give you an example.

Telling . . .

Sarah regretted coming to the party. Things were getting out of control and she was scared.

get the point and understand the situation, but do you see the scene and feel Sarach's feelings? How's this?

Showing . . .

Sarah dodged out of the way as Alex Johnson staggered by her towards the stairs. She'd come up to the second floor to find the bathroom and maybe a little quiet. The throbbing bass of the music vibrated under her feet. She worked her way towards the light at the end of the hall, assuming it was the bathroom. The door was ajar so she pushed it open. Sarah's heart leapt into her throat. Sprawled on the floor, leaning over the toilet, was a complete stranger. He raised his head when the door opened and waved a half-empty beer bottle.

"Wanna have a drink with me?"

Sarah slammed the door and backed away. She bumped into someone coming down the hall towards the bathroom. It was Jeremy Smith, the jerk she sat beside in math. His hands wandered over her body and he tried to pull her into one of the bedrooms.

Summoning all her strength, Sarah yanked away from Jeremy and ran headlong for the stairs. Racing to the front door, she burst outside into the pouring rain. She had to get out of there before something awful happened.

Now you can understand how Sarah felt. You can feel that she was scared and confused.

You can entwine the reader more in your story when you show instead of tell. Putting detail into the story enthralls the reader so they want more.