Ryan Said:

How to improve my drafting skills in English?

We Answered:

WRITE LIKE YOUR LIFE DEPENDED ON IT!

Just kidding but seriously writing is very easy just learn more terminology and incorporate that in your work.

Roger Said:

How can I improve my writing as well speaking skills in English?

We Answered:

To express yourself or to explain a situation, you need to build up your vocabulary, that is, you need to know plenty of words and how to use them. This may take a little time.
Practice reading newspapers and magazines regularly and listen to the news in English. Listening to the words being used and how to pronounce them will help you a lot.
Basic grammar is important, but you don't have the time or patience to study English grammar now. So get hold of the Oxford Advanced Learner's Dictionary for reference.
Most important, get hold of a friend or relative with whom you can talk every day in English for at least two to three hours.
With effort, I'm sure you'll have improved a lot. All the best!