Well, You've come to the right place, but we don't do magic tricks here. By that I mean were not going to just take your first sprite and transform it into piece of "omg drool candy" for you. This site is basically the wiki of pixel art. You can find help with just about every aspect of pixel art.
I guess we should ask what your aiming for? What is it your trying to pixel? my guess would be a space shuttle. If that is what your trying to convey, congrats you've done it. Now if its a fish or a boot or whatever, then I guess my next question is, Do you have a reference or sketch? Or is it it a freehand boot? Are you going for photo realistic or cartoony? Did you want to stand out as pixel art or do you want the lines and edges to be smooth and seamless?
Maybe if your unsure visit
www.pixeljoint.com to get an idea of how you want your pixel pieces to look. after that visit our general section and take a looks at various post that explain A.A., Selout, PillowShading, Dithering, etc.
in any case welcome to the boards and have fun pixeling!