Question

how to create a comopsition of 2 to 2.30 minutes

Answer 1

Start without a clock.
Decide on a topic.
Research what you need to know about that topic. Here is a valid maxim: Writing is 95 per cent think, five per cent ink. That means research is important!
Write a paragraph.
Read your paragraph.
Proof your paragraph.
Write a second paragraph.
Read your second paragraph.
Proof your paragraph.
Repeat until all paragraphs are completed.
Then read the entire piece.
Proof the entire piece.
Edit where necessary or desired.
Rewrite where necessary or desired.
Read your entire piece.
Put it away for at least a day. This is your cooling off period. It must be cold, or at least pretty cool, before you can see what you missed.
Come back and read it again.
Is it still what you meant to say to your intended audience?
Does the thought flow from start to finish?
Have you corrected all spelling and punctuation errors that hid themselves away from you yesterday?
Read your entire piece again.
Satisfied?
You are done.
Now repeat this process until you can write a composition within one day.
Get good at this. It will take many, many days to get good at this.
Then repeat this process until you can write a composition within four hours.
Get good at this. It will take many, many days to get good at this.
Then repeat this process until you can write a composition within two hours.
This will be much harder. You're shortening the time it takes for your writing to cool off. 
Get good at this. It will take many, many days to get good at this.
Now shorten your writing/cooling off time to a mere hour. Ouch. This is hard. Get up and walk around. Go through several doorways. There's a psychological premise for the doorways I won't address here. At this point you'll need to be able to write for 30 minutes, cool off for 20, and finalize for 10.
Get good at this. It will take many, many days to get good at this.
Celebrate your birthday.
Celebrate another one.
Keep on celebrating.
Keep on writing. Practicing. Writing.
Fine. Now get out the clock, but stay away from the ticking sound.
Write again. Cool off again. Finish again.
How long did it take you?
Keep on practicing.
Enjoy your kids' birthdays.
Enjoy your grandkids' birthdays.
Keep writing.
Write your own obituary. I'm serious. This is definitely a composition, and you know more about this content than anyone. Besides, it's something that will definitely be published at one time or another!
By now you might have gotten the knack of writing a good English composition within 30 minutes.

Ah. But if this is for writing compositions in English class, team up with another good writer and practice by exchanging unassigned papers to get experience recognizing cold errors. There's nothing like a good editor to shorten the cooling off period!