The 20-year-old has impressed at Old Trafford since joining the club from Bordeaux during the summer.
Obertan failed to score a tap-in on his debut for United against Blackburn in October.
“I hope I will score soon,” said the France Under-21 international.
“It is possible. I had those chances against Blackburn.
“I do have to work more on my finishing but I am confident it will come.”