The phrase "a bit of excess" is correct and usable in written English.
It can be used to describe a small amount of something that is more than what is necessary or desired, often in contexts related to consumption or behavior.
Example: "While the meal was delicious, I felt there was a bit of excess in the portion sizes."
Alternatives: "a little too much" or "some surplus".
In what could be seen as a bit of excess, "Crude" is actually being celebrated by two such gatherings.
Every one of us has looked in a mirror at some point, turned, grabbed a bit of excess flesh and thought how great it'd be if it just didn't exist.
The world could use a bit of excess demand, the American economy could use some cushion against deflation, and moderate inflation would effectively tax foreign holders of government debt.
In her first public speech since being reappointed home secretary, May said that the next round of savings would mean that police reform would have to go much deeper than "shaving a bit of excess off here" or reducing a bit of bureaucracy there.
That's something that restaurants are willing to do, since most can't fit any more people in seats but often have a bit of excess capacity in the kitchen.
He is carrying a bit of excess weight, he'll admit that himself, but it's up to us to get that off him.
The restaurant's signature appetizer, giant prawns in sarong, is a bit of visual excess that seems slightly out of character for Mr. Robins.
(The dad was actually disappointed to learn that most of the medallions, once a bit of ornamental excess whose point was to be treated disdainfully, have vanished; they ought to be restored).
There are moments in the second act when the play seems less like a work about the past and more like a work from the past — a bit of melodramatic excess creeps in — but Chuck Smith, the director, keeps this to a minimum.
Plugging into the sun requires photovoltaic solar panels, an inverter, and batteries that can store a bit of any excess energy for a rainy day.
But this is a bit of rhetorical excess, no matter how much you agree with the sentiments expressed.
