Just a little something about sprite requests you should know... People are more likely to answer your request if you are more specific about what exactly you want.
If you have some kind of idea in your head on what the characters look like, describe them to the best of your ability. In addition, you should also describe what kinds of poses you want. Like, you mentioned a breakdown sprite; that's a good start, but we'll need some more examples. Normal? Smug? Surprised? Thinking? And what should they look like? You know the drill. A good way to figure this out is look over the script of your case and visualize what it's going to look like when it's done. Just be warned, though, we're not mind readers, and chances are we're going to send in something that's not exactly like what you expected. So if you still end up vague, make sure you tell people you're willing to accept room for interpretation.
And another thing, if no one still answers your requests, don't be afraid to try out spriting yourself. I came into the Court-Records forums a lot like you, with an Ace Attorney Online series totally written out but lacking any sprites. A couple of people were nice enough to give me some progress, but ultimately, so few people helped me that I thought, screw it, I'll just try doing this myself. And I ended up finding out that I'm actually a semi-decent spriter all by myself.
As of right now, I highly doubt I'll be able to help you, but I just might be able to do something if you're more specific on what you want. Maybe.
Arg. I've tried spriting myself. Let's just say that experience ended in disaster. Anyways, I realized long after I posted this that I really needed to be more specific. To be honest, all I have is the basic plot written out. I need to write more about the characters. Give me some time, and I'll re-post on this forum (not this thread, i'll make a new one) with more described characters. However, you should know that I may add in or get rid of some characters.