Do's in Essay Writing

Please take care of the following things while writing the essays.
Do not hesitate in the following::
1)Subject-Verb Agreement.
2)Sequence of tenses
3)Parallelism(do not write 'He loves reading, singing and to paint'.)
4)Logical comparison(Do not write, 'oranges in Nagpur are cheaper than Chennai.Write, Oranges in Nagpur are cheaper than those in Chennai'.)
5)Correct word order
6)Diction(right choice of words)
7)Avoiding wordiness
8)Avoiding fragments of sentences
9)Right prepositions
10)Effective Language