When adding details in writing it's always important to consider how a reader may think about a detail you present. How will the reader put that detail into context at any point in the story
A great way to so so is through well thought out word choice. when a detail (aka a noun) is being introduced it's common to use an article to introduce it. Often this takes the form of the words "the" and "a/an". these articles have specific uses depending on if information is new to the reader or if it has been already introduced. Starting with the phrase "A boy climbed up a tree" introduces both the boy and the tree as new information. 
So from then on you would switch to the phrasing, “The boy continued his climb up the tree”. because now both the boy, and the tree are familiar details. You already know them. These are known as: indefinate articles (new information where a/an is used) and definite articles (old information where the is used) 
Along with that these articles can be used to insert the feelings assigned to new or familiar details. For instance starting with “The old man sat on his rickety rocking chair on the cabin porch as a racoon scampered by” implies that the cabin and the man are both familiar points, but the Racoon however is a new and unfamiliar point. Despite everything about the sentence being new, having the the other details as fixed points makes us understand that the Racoon is comparatively new and surprising.
Now for some practice, because practice makes better!
Use this generator to pick and object, or two! the more the better . Once you have your object(s) right a sentence about them. Are they new or familair? what scene comes to life around them? If you did more than one item, how does having them together make each one feel? You may find one to feel more familiar than the other, thus it may end up with the definate article.
It's a simple trick to be sure, but simple certainly doesn't mean useless. have a great day writers!
