Hello, just to let you know I'm not a professional, just a writer like you.
Overall sense
I have to say you can really write some great beginnings that leave me wanting to read more.
Areas of improvement
Born somewhere out in the desolate land of Vermillia, some 20 odd years ago, Ratman was abandoned by his biological parents and raised by a pack of huge, disgusting rats. He learned their ways of communication and the value of cheeses, among other things. He appeared years ago in random cities, always trying to acquire wealth from those he could fool. This market was the perfect opportunity for a chance at big money and possibly a partnership he was working on. He had a grand scheme in mind but he knew he needed assistance if he were ever to see it to fruition. I would leave this part out, because as I went through the story it showed this, so telling it at the beginning is not necessary.
Favorite Line
Ratman began to whistle loudly in different tones and for a few moments, there was utter silence. Then something happened that only the most sensitive person could feel; I could picture this happening clearly in the story.

Thank you for writing and posting this for me to read. Keep on writing. Mystic Angel