I guess it's been said but you all keep ignoring...
DO NOT UPLOAD YOUR SKINS AS BMP FILES.
THE IMAGE HOSTING SITE CONVERTS BMP IMAGES TO JPEG AND HENCE, GIVES THEM UNNECESSARY BLUR.
To upload your skin correctly, convert it to .png and save it to another folder than smw/gfx/skins, and upload that PNG file. PNG files are not given blur when uploaded, therefore, they can be saved directly from the forum to your skins folder and show correctly in-game.
Example of a badly-uploaded skin:
Now let's zoom in...
See the blur?
And if I try to use that skin in-game...
It shows like this:
P.S.: None of above images were edited.
Skin belongs to Lurchi (General_Guy)
Oh, and I ask a sticky for this.