Have you ever submitted any articles in academic journals? Most of them give the instructions for authors that they require the authors to submit the paper in word processed form, be it printed out and mailed to them or, more commonly now, emailed as a word processor or pdf file. Therefore, authors ideally try to model the process of writing a review article for a journal as closely as possible.

However, this is not always possible and in certain cases, you have to submit a handwritten document, either it is a written exam and the examining authority provides paper rather than word processing facilities or simply because you are told, for some reason, to submit a handwritten paper.

You may also choose to submit a handwritten paper, since there are a lot of diagrams or complicated formatting, especially, a written report of a practical or an exam involving a lot of calculations. In
these cases, you may be able to do the parts with complicated formatting, like calculations or diagrams by hand, scan them and include scanned images in your word processed document.

Well, whatever the reason is, there are times when you have to submit papers that are handwritten. But, mind it, with poor handwriting you may end up having poor grade. Most examiners however, are very forgiving for even the poorest handwriting, despite of the fact that those examiners have beautiful, legible handwriting themselves. But, there are also some examiners for whom good handwriting means a lot.

At this stage in your life the quality of your handwriting is something you probably don't have much control over. Neither do you have any control over the examiner's reaction to poor handwriting. You do, however, have control over whether you introduce more white space into your script by using subheadings, figures, tables, lists, spaces between paragraphs and so on.