One common piece of feedback from lecturers and tutors is that student writing can often be very wordy!
That is, the writer uses more words than necessary to present describe, explain, illustrate and argue the main points in a paper. This wordiness is obviously a problem when you need to keep to the word limit for an assessment but it also affects the overall quality of your writing. Wordy sentences can be difficult to navigate which means that the reader has to work harder to understand your point.
Have a look at these resources from The Writing Center at the University of Wisconsin-Madison to help make your writing more concise.