That is an individual thing we need to review on a case-by-case basis. There are several parameters you should take into account while analyzing your writing. You should pay attention to content – it should expand and align with a topic. Such content should be structured well and well-organized too. It has to be free from any kinds of errors and omissions. Another point is readability – your text should be easy to read and understand the main meaning of all points you express there. These are basic things only. Professional writing services may help you in getting a more precise understanding of the matter.