Shadow Night Artwork - Part II

Hey Pony Fans, MysteryHorseDude here,
So, in case you haven't seen my previous blog, here's the link.
I suggest you read that blog before reading this one.
After reading that blog, you must know what I want for the artwork for the preview image.
So you must be thinking, I have everything set for my story, right? WRONG!
I decided to change my mind about my prototype storyline because I was thinking it might be a rip-off of "Bride of Discord".
However, that still leaves with one problem: my fanfiction's short description and long description.
As of right now (7:12 AM); my short description for my story says:
Shadow Night, an enemy of Celestia, succeeds in making Twilight Sparkle his prisoner. But will Twilight melt his stone-cold heart?
And my long description for my story says:
Long ago, Princess Celestia had an enemy who was just a young unicorn colt, but he threatened to destroy Celestia. Princess Celestia had the colt imprisoned deep inside a set of caverns for who knows how long. The colt's name was Shadow Night.

Shadow Night, however, was eventually set free with the aid of a new enemy named Lord Xerxon, ruler of an evil organization bent on overthrowing Celestia. Now, he's grown up, he's the same age as Twilight Sparkle.

When Shadow Night learned about Twilight Sparkle, he captured her and made her his prisoner. However, as time went on, he started to grow fond of her.

Is there more to Shadow Night than meets the eye? Or is Shadow Night destined to follow a dark path?

That's what I had, but I might consider changing it to change the idea for a plot into more of an ORIGINAL story.

As for artwork don't worry about it, I'd just like it to be an painting of Shadow Night along with an emblem of Twilight's cutie mark behind him, and the background could be a silhouette of the monster form of Xerxon.
It doesn't have to be perfect, I'd just like artists to pay close attention to detail, if they can.

That's all.