oh my I'm sorry but these are awful and are not packaged properly. Never use paint, it is not a sufficient program to make decals. It does not have vector tools and it can not export transparent images. Download a free program like Inkscape if you can not afford Adobe software. Anything that has vector tools is sufficient to make decals. You don't have to start out using vector tools but you should at least be using a program that supports it.
Second, start with default smiley. Don't start from scratch because nothing will be centered, your eyes won't be in the right spot, and your decal will be all over the place. Draw on the default Smiley face using hard-edged tools. Don't use spray paints and other splattery effects because they look like total garbo in-game.
Third, you have to package things correctly. the .zip needs to contain the face AND a thumb folder with the icon, which should have the same exact name as the face and be 64x64 pixels.
Lastly, they have to be transparent :c Do not ever release a decal that has no transparency in it anywhere.
Edit: it should also be noted that it isn't a good idea to release your first anything. Practice until you can produce something that is worth sharing. There is a reason art galleries don't pay thousands of dollars for kindergartener's artwork or even a highschool student's project from Drawing I
