By this, I assume you mean the textures in 1.14 and wanting to re-texture them. In order to do this, you must locate your Minecraft folder and then locate your versions folder. Then you must press the 1.14 version you are wanting to use (as of now it is 1.14 pre-1) and open that folder. Then open the jar file with WinRar. Once opened, you then copy (ctrl+c) the "assets" file and paste it into a folder where you want to edit the files (ctrl+v). Alternatively, you can just drag the files into whatever folder you want (though does not always work). This post is not in the correct area though as this is not a modding support post, instead of a Minecraft support/texture support. Try the Minecraft Forums for future posts on these matters, or http://www.minecraftforge.net/forum/forum/65-texture-packs/!