Oh. Ummm. Apple Bloom's is obviously related to apples because of the Apple Family, Scootaloo might have had learned to fly(? Heard that she had a disability) and Sweetie Belle had the talent to sing well. You know the episode where they entered the Talent Show ? It shows what they were good at, just that they tried to do other things that they may have not been as good at as the one they were naturally professionals with. So basically, Sweetie Belle was a good singer, Scootaloo was probably the manager or backup supplies pony and Apple Bloom was probably good with designs or dancing, I guess. I dunno for sure. xD
I was really impressed with this. and i really feel like you made their cutie marks perfect! i wasn't going to say anything until i scrolled down and read some comments.. I'm sorry about the horribly confused!
actually scootaloos talent is riding her scooter, but the reason she doesn't have her cutie mark is because she doesn't realize its her special talent. Like cheeralee said a cutie mark only appears after you realize what your special talent is.