How to edit the assets in the jar version file in minecraft?

I want to edit the assets, like the textures of the blocks, in the Minecraft .jar file. For example, I want to change the textures of bottles without using a texture pack, and directly change what Minecraft thinks the default is.

The process I’ve tried so far is:

• turn version.jar, in this case 1.10.jar into a .zip file
• unzip it into a folder, now just a folder called 1.10
• navigate to 1.10/assets/minecraft/textures/items/bottle.png
• edit that texture
• compress the folder back into a .zip file
• change it to a .jar file
• replace the original version.jar with mine

But when I try to launch it, Minecraft refuses to launch it. Why, and how can I edit Minecraft correctly?