It's cute, fashionable, adorable, dandy, original and 1337 at the same time. This is really a good deviation for making your OC the fourth member of the Cutie Mark Crusaders.
I am a brony and i really think that you're OC should really be in a contest sponsored by The Hub which is only if you're a deviant. Whoever wins the contest, the OC will be in the show and then it would be history to the internet and also television.
For the record, i am really satisified with the whole cute stuff. I am brony just because of the cuteness and stuff. Oh and normally it looked like Kia from Freddy vs. Jason. But overall, it looked cute.
I didn't really like Babs' character in the show, and for the first half of the episode I didn't believe she was a filly Also, you managed to do this really quickly after the episode aired, so good job!
Babs, the 4th Crusader, after through coming back from the Darkness into the light once more did solomly swear to dedicate herself to the CMC cause, thus opening the Manehatten Branch of the Cutie Mark Crusaders, furthing the organizations true goal, COMPLETE EQUESTRIAN DOMINATION!!! MUHAHAA!!! Yes, for soon the Blank Flanks of the world would rule over their entitled marked sisters, very soon!