You might be interested in some of the blog posts in the ‘Teaching’ section of Tim Squirrell’s blog.
There is one called ‘How to write better essays‘. In this one he reviews some key areas of essay writing. This is a summary of the contents:
“In this guide you will find:
(1) a 24-hour panic guide for students who’ve made the grave error of leaving it to the last minute and want to know the absolute basics of what they should do to achieve as decent a grade as possible;
(2) a discussion of how to pick an essay question when you have the luxury of choice;
(3) a guide to reading for the purposes of writing an essay;
(4) tips on answering the question properly, including clarification of what on earth it means to “question the question” and why that’s important;
(5) a how-to on structure, which is really easy and almost everyone gets wrong;
(6) a guide to analysis, and how to PEE on your essay in an effective fashion;
(7) tips on referencing properly, including software recommendations that will save you hours;
(8) new to this guide, some insights into how essays are marked and how to make sure you don’t end up with a worse grade than you deserve;
(9) some take-home messages”.
(Squirrell, 2017, p1)
As you look at this bear in mind that at the University of Northampton we use the Harvard system.
He has also made video guides which you can see here.