SapixCraft HD is an incredibly well-developed and popular resource pack (texture pack) for Minecraft, which is in great demand among players around the world!
Just look at screenshots anf go download version you want!
How to install resource pack:
1. Download Resourse Pack
2. Open Minecraft, go to Settings-> Resourse Pack-> Open Rosourse Packs folder
3. Move the downloaded .zip file to Resourse Packs
4. Select Resource Pack in Minecraft