Fate/Stay Night Excalibur

I wanted to try recreating Excalibur from the Fate/Stay Night Manga and Anime Series. Some of the UV mapping in the model is a little wonky, so there are some areas that have strange coloring. For some reason the entire model isn't nearly as colorful as it should be...as if for some reason all my color values were desaturated. EDIT: For anyone reading this, can someone explain to me how I'd be able to bring image textures onto my models on SketchFab? The sword is missing a texture for the engraving in the fuller of the blade. Also looking at other people's versions makes mine feel pathetic XD. And I can't believe I forgot to add the sleeve at the base of the blade :I