How to improve my spelling?

Hi… Sir/ Madam…

 Respected..

While I am writing some small easy, doing some small mistakes in spellings… how can I improve in writing correct words.

With Regards.

Yeshop

My whole family have bad spelling (not good in my job as a proofreader), but I think that by reading a lot I recognise when words are wrong.
So I may have to write a word three times, three different ways, but then I will know which one looks correct and I’m nearly always right.

My tip is read a lot.

You can improve your spelling by using a spellchecker every time you write an essay and following its advice, but you have problems other than spelling, that are more urgent and that are much harder to fix (going by my experience with the language).
For example, “doing some small mistakes” is an unusual choice of words, much better to say “making some small mistakes”