***** NOT A TEACHER *****
(1) Good luck to you on February 26. I am sure that you will do
(2) Learning to spell well takes a long time. In fact,
there are some words (that are not used too frequently) that
even well-educated native speakers have to look up in a dictionary
in order to be certain.
(3) I have two suggestions:
(a) Have a friend dictate a few sentences to you every day.
Then correct your mistakes and see which words you need to
work on. Little by little you will notice great improvement.
(b) The following advice is very old but true: read, read, and
read. After many years, your eyes will become accustomed to
how a word looks. Your mind will tell you: "Hey, that's not right!"
Many native speakers do not spell well. Why? Probably one reason
is that they are not readers.
Student or Learner