I was never a fan of G1, so I have no idea what this character was like in the series ^_^;; So instead I based her personality sorta off of these card things:
[link] &
[link]For G4, I figured Moondancer would be somewhat popular, but still have an interest in the Princess's most faithful Student. Maybe she'd go out of her way to try and impress Twilight, (hosting little get-togethers, etc) or she took Twilight's introverted ways as sort of a challenge. (Take that as you will!)
I also tried to make her Spike's "type", but not quite as Fabulous as Rarity, but still more so than Twilight, if that makes any sense.

Moondancer (c) either Hasbro or someone else, FiM (c)

I wrote about her in my fanfic, an important character. To me, she is another of Celestia's studend, and a talented one, but she was always distracted by parties and trying to make friends, and was always trying to befriend Twilight, who always ignored her.
That sounds cool~
I did the initial sketch on an oekaki board, (over here: [link] ) but I moved the sketch over to Photoshop CS3
If you're drawing G1 ponies in G4 style, please, PLEASE draw Wind Whistler! She's my favorite G1 pony~ She's a lot like Twilight Sparkle, as in being very very smart, but she doesn't show her emotions often because she finds it unnecessary. There's an entire episode based around that. She reminds me of Bones. In fact, she's EXACTLY like Bones!
Of course I'll probably change her a bit, (as I'm sure Show!Moondancer is probably different from my version of Moondancer XD) but I'll try to do her justice c: