I love your writing style and descriptive. There's no fault whatsoever with your writing.

Where I'd improve is depth. Simply there's none right now outside 'this is what i am, ill make you scared'. Try and create some story arcs, long or short, to make your pieces more interesting.

Also the name Reaper, and the dark gimmick in general, is quite commonly used. I don't say it to offend you because, like I said, I like your writing, but the character itself is rather generic. Try and break the mould a little. That word again - depth. Many years ago I wrote a successful dark character but it wasnt until I broke past the cliches and gave him life that I really started to love writing for him. Some of this will just come naturally with competition of course.