So, I've looked everywhere I can think of, and I haven't been able to find it. It's a piece by Yoshitaka Amano of Terra on her Magitek steed, but it's not the one everyone's familiar with (below),

It's one that was put up on the FF6 Advance website way back when, where she is facing the front and has a scarf flowing behind her. It's very striking, and I really want to use it in Photoshop. If anyone knows what piece I'm talking about and knows where I can find it in good (or better) quality/resolution, please let me know. Thanks in advance.

Looking through the FFVI artwork in my Amano artbooks, I don't really know what image you're referring to. There are several paintings of Terra where it shows her with a scarf flowing behind her, but she's not riding the Magitek Armour. That doesn't mean it doesn't exist however.

About the only thing I can suggest is to perhaps try looking on Amano's own website ( www.amanosworld.com ), as he might have it on there.

Just my luck, Amano's Final Fantasy page is under construction lol. I'll try again later. Thanks for the link. I guess I just need to keep digging...

Uhh, use this link. Not mine, But I think it might be here.
http://www.finalfantasy500.com/