Its honestly really hard to tell with this picture. If you send a better-lit picture of a brim using a lighter-colored filament, we might be able to provide better help!
But something definitely looks off. It looks very thick and very uneven to me, but I also have no real sense of scale with this picture.
In any case, if this is your brim, the mouse ears and other similar proposed solutions won’t change anything.
Get ready to be unimpressed by the results this will bring.