Ahh, Vinyl... She's a pretty cool character on the series ^w^ I've seen a few videos of her, most of them funny, and I think that people has given her a nice style and personality. Along with her voice and her role as a DJ, Vinyl stands up as a very unique and distinguished lady.
I think that you picture is great for her. It's really strange to see her in such a calm state and a adorable pose. It suits her very well and would be nice to see her in this way more often, just to change ^_^ The colors are fantastic, and the shades as well as in other works from you, are a great touch to the finish of the picture. Her expression is lovely too.
I didn't noticed until now that this one was featured on a Polish brony blog called 'For Glorious Equestria' here. [link] I still can't get enough of your style, it's so simple and awesome at the same time.
Hmm, I see. I don't think it's a real problem though, I'm not exactly upset or concerned at all, to be honest. It's no more than a base drawing based on a drawing, I'd be more inclined to step in if it were more full blown art theft. It's fine with me at the moment, but thank you for making me aware of this.