Dear GVN Sekar,
I fully read your question. This language problem is not only with you but exists with all Telugu-speaking people. I have quite a few of them in my office, and I corrected them to some extent through training and language labs.
The general flaws that they make are much applicable to you also:
1. Don't use SMS English while writing a letter or text. This wrong spelling becomes a strong habit.
2. Concentrate on grammar, tense, singular/plural, clauses, and sentence formation.
3. The main error committed is using the wrong past and past participle in a sentence.
4. If it is written English, learn to apply punctuation, and this would naturally be reflected in oral communication as well. Even a blind man should be able to punctuate a sentence when you speak; i.e., the spoken version should reflect the presence of punctuation.
5. Keep learning and writing as a regular habit. Have a dictionary when you do this.
6. Have someone who is strong in your circle to rectify when you speak. Engage in group discussions regularly. Ask him to monitor the dialogues.
7. Ensure that your English phonetics shouldn't sound like Telugu phonetics. For example, often pronounced as 'syllabus-su', 'book-su'. Avoid mother tongue influence.
8. Concentrate on the phonetics of 'z', 'sh', 'pa', 'pah', 'pe', 'pey', 'pay', etc. Telugu friends pronounce 'Paper' as 'Pah-per', 'xerox' as 'gerox', 'zero' as 'gero', etc.
9. They create new plurals like 'People-s', 'Police-s', etc. There is no plural form for this.
10. Avoid watching Telugu films, books, and change your vision to readable English books. Try crosswords, sudoku, scrabble, etc. You can try school non-detailed books, storybooks to understand sentence formation.
11. Owing to these, you tend to have a fear of expressing thoughts into words.
Meeru nenu cheppinatuga thappakonda follow chestey English lo matladi, chadivi, raasethaniki osthuntaiya. Idhi okattiyum brahma viddha kaadhu. Nenu writer, poet, author ga unnaanu. English kurinchi advice chestenum, meevariki Telugulo oka maata cheptheyne naaku thrupthi.
At college, teachers would have taught you English through Telugu, and the whole purpose is not served. When I visited some of the colleges there, I noted this.
Keep learning.
Regards,
Chandru