"confused face" is correct and usable in written English.
You can use it to express that someone is feeling or looking confused. For example, "The student had a confused face when she heard the question."
*inserts confused face here*!
She delightedly chose a cookie, took a bite, and made a confused face.
And finally the innocent, confused face – brow furrowed and head tilted slightly to one side, like a baby dinosaur seeing its first butterfly.
Now I came to think of it I could picture Erich's furious, then confused face flashing by - was it too late to double back?
At a wedding, years after I graduated, when I mentioned my relatives in Baghdad, a roommate who lived with me during the tense months before the American attack made a confused face.
Watching the penny drop and the expression of newly found enthusiasm on a previously confused face provides me with the satisfaction of doing a good job.
There were some confused faces.
Then came the doubts and the worry, the confused faces from doctors and friends, "India?
Unfortunately for them, the questions were more along the lines of "Who is the captain in Battlestar Galactica?" prompting confused faces amongst the beeb's commercial teams.
While Tom Bryant and I were pulling confused faces at the screens, it looks like the Russia v Slovenia match finished as we're now watching highlights of the USA v Slovakia.
"At first I didn't realise it has to be with the foam hand, so this morning I had some very confused faces from passing children," she adds.
