BrickgardHere are some optional tools that will make your life easier when modeling.
MC-META
This is a Blockbench plugin that lets you write mcmeta to textures.
Download the plugin by right-clicking here and using Save As.... Name it mcmeta.js (VERY IMPORTANT, don't skip) saved somewhere you can retrieve it, such as your downloads folder. Then to install it, simply drag & drop onto Blockbench.
To write mcmeta to a texture, right-click a texture, then select Edit MCMeta.
You will see a pop-up window with a text field. This text field will contain the entire json of the mcmeta file.