Texturepacks are something else you can add onto Minecraft. Unlike mods, Texturepacks do not change the game at all but instead make everything look different. As you can see this Texturepack has made everything look different than it did before. Which means it worked.
This is another Texturepack you can download for minecraft. As you can see it also makes it look different then the original. Some Texturepacks make Minecraft look a lot better and some make it look a lot worse. It all depends on what you prefere.
