It is very helpful to have a dictionary
to hand when you are writing, to ensure that your spelling is accurate and
also that you are using words, such as precise technical terms, in appropriate
contexts. You may also find it worthwhile to have a glossary of literary terms
to hand when writing your essay, as well as when you are reading texts and
criticism.
If you are word processing your
essay, make use of the spellcheck facility. More advanced word processing
packages also have built-in grammar checkers which you might find useful.
If you know you have a problem
with spelling and grammar, make sure that you set aside some time to check
this aspect of your work.