How to stop yourself blushing or going red in the face?

Is there away to stop yourself from going red in the face, so people cant tell your nervous or have been caught out?How to stop yourself blushing or going red in the face?
Think of something scary or sad %26amp; you'll stop... stupid I know,


but thats how I stop myself...How to stop yourself blushing or going red in the face?
Think of something else.
Think that its normal