Use Brushes, get a better quality render, better font, learn how to use brushes and not w/e you did right there to the background.
You have a lot of work to do man but you are in the right path. Just look at tutorials and learn your way around photoshop.
www.pixel2life.com
www.dafont.com
www.good-tutorials.com
www.deviantart.com
This one is for the brushes. Scroll down look for resources then for photoshop brushes. Download the ones you want to disk. They will hopefully save to the dektop. Once in photshop, hopefully you have CS2 because then you can download any brush and use it. If you dont, you can only use brushes that were made with your version down. Well once in photoshop, go to Edit and scroll down to preset manager. Load the new brushes that you got. Use them with the brush tool. Just learn your way around photshop. IM me if you need any help. Well hope that helps. I recommend making a new folder to keep you brushes organized.
If anything ask someone that knows if they can help you out.