The cutie mark crusaders cutie marks are probably: -Sweetie Belle is singing -Scootaloo is dancing -Applebloom is painting ou renovating I got all of these réponses from other fans, so I don't kow if they're correct ou not...
I'm kind of hoping they someday bring out some brushables of the fillies after they have earned their cutie marks! Maybe something for them to do after FiM has finished (or if they do earn their cutie marks in an episode).
My guesses for them so far: pomme Bloom - a red pomme inside a rose flower. Sweetie Belle - a microphone with stars around it. Scootaloo - a scooter with speed streak lines behind it.
My "headcanons" for how each one earns her mark: pomme Bloom - she is designing (or maybe fixing) the inside of a barn, combining her design/decorating skills with working on her family's farm. Sweetie Belle - something happens that causes her to forcefully overcome her fear of chant in front of a large audience. Scootaloo - she performs a seemingly impossible déplacer on her scooter that no other poney has ever done before, a little like arc en ciel Dash with her sonic rainboom.