The England attacker moved to Stamford Bridge from Manchester City this summer.
And Tuchel is hoping the 27-year-old can become an intense attacking threat for his side.
"What he said to me was about my directness, always threatening in behind, not always wanting it into feet, and most importantly how I attack the box," Sterling told reporters.
"With the full-backs we have here it is something he wants to see a lot more of.
"My position is mainly as a winger, but sometimes I enjoy floating about and getting on the ball.
"I always judge myself on how effective I am on the game. It depends where I am going to be most effective. In the last game against Everton I played in the false nine position, and I'll be most happy where I can be effective and help my team."