fluff

a blunder (especially an actor's forgetting the lines)

something of little value or significance

any light downy material

ruffle (one's hair) by combing the ends towards the scalp, for a full effect

erect or fluff up

the bird ruffled its feathers

make a mess of, destroy or ruin

I botched the dinner and we had to eat out

the pianist screwed up the difficult passage in the second movement