This resourcepack adds additional layers to leaf blocks, making them appear more bushy, natural and more realistic.
Better leaves adds no textures is default texture so you can use it will allmost every sing resource packs and mod pack out there.
i recommend you to enable the Smart Leaves option in OptiFine
HOW TO DOWNLOAD!
To download it all you have to do is head to the link above after doing so, press win + r in your keyboard a pop up will appear search for the following %appdata% and then click ok or enter.
After all of this you should be greeted with a folder you are going to find .minecraft if you are there that means you are still following along side with me, then head to resourcepacks and drag your resourcepacks into the folder and there you go just make sure to reload Minecraft and that is it!