Hey Billy. I don't think that your skin will work, because you renamed it. When the server or other folks computers look for the skin to render, they will look for the names of the skins. If they are not on the server, or computers, then it will give your character a default skin. I have posted the skin changer program that I use online for you. It can be found
*HERE*
Read the Read Me First file to install correctly. After you have it installed...
1. Hit the Let Me In button
2. Hit the Load Preview Pack button
3. In the new window, hit the Load UTPT Library button.
4. Now you can pick the texture that you want to use. Be warned that MOST do not work online, for some reason. Some do not work even in practice games. Either way, you can test the skins first in practice games, and then online. Good luck!