The Germany international made a second half substitute appearance at Parkhead on Tuesday night as the big-spending French outfit got their group stage campaign up and running with a 5-0 win against Brendan Rogers' Scottish champions.
PSG spent £364million to bring in Neymar and Kylian Mbappe during the summer and the duo were both on the scoresheet in Glasgow.
Despite having hit Celtic for five on Tuesday, Draxler is convinced that the more games the team plays together, the better the performances will be.
Bayern Munich are up next for PSG in Group B on September 27 and Draxler is backing Unai Emery's men to improve on the Celtic game.
He said: "I hope we can improve because we have to if we want to go far in this competition. We’re happy for the moment but we have to continue like this.
"Now the game is finished we’re looking forward to the next game in the Champions League against Bayern Munich at home.
"First of all it was important for the group stage that we got the first three points, it's always important to start good.
"I think the teams know we are good but in the Champions League it is the small things that are important in the end. It's a good start."