"In Test matches I'm very cautious. I want to score more runs and I want to score big runs and I want to prove everyone wrong because when I came to the Indian team everybody was saying 'He's only a one-day player, he cannot bat in Test cricket'," he said on an ICC talk show.
The Delhi-dasher is currently undergoing rehabilitation after a surgery to be fit for September's ICC Champions Trophy in South Africa.
Often compared to Tendulkar, Sehwag said he always wanted to emulate the little master.
"I wanted to become a Tendulkar, but that's not possible because he is a God of cricket. When I was watching him on television, I tried to copy every single shot."
Sehwag was sent home from England during the ICC World Twenty20 because of a shoulder injury sustained during the second edition of the Indian Premier League.