I once read about a writer who specialised in writing teenage fiction. To help keep her target audience in mind she had a picture of a teenager on her desk. This was a constant reminder of who (and the age range) she was writing for and allowed her to write in the best and most appropriate way.
As you plan and set about your writing, this is something which can be of great help. Visualise the type of person most likely to read your material. By doing so your writing will be more relevant, applicable and, if sent to the right magazine or publisher, have greater chance of acceptance.
Do bear this important Writing Key in mind - I am sure it will serve you well.