Shooting Bullets Problem

Hi. I need a little help in creating games with shooting bullets and stuff. Thanks to the book by Jobe Makar and Ben Winiaczyk, I was able to add a bullets feature in my game. Now, my problem is I can’t seem to make him shoot in both directions without the previous bullets returning back to him! Any help? (I’m sorry for the lousy graphics, I was in a hurry to upload it.)