When reducing you have to remove quality. Just do the mouth outline and eyes, for example. Lose all those other lines. They won't make it. Also, something like that, when it doesn't reduce well, just make one from scratch, using the original as a template and only drawing the important lines (like I said, mouth eyes, etc.). If you send me the file with the original size and the size it's supposed to be I can give it a shot. I'm decent at it.