I made 2 cubes, one showing north and south and the other showing east and west
As my blade and the glow are the same colour, I did not need to shift the cubes 0.001, as z or y-fighting is not noticeable...as far as I can see it
That's pretty much all you can do. It will look grainy, so it's best to play in a high resolution so each pixel is less significant. Also you know how it'll have a solid inside and a grainy halo (maybe yours won't, but mine definitely does)? If you maximize the inside and make the halo smaller, well the inside is smooth so it'll look smoother close to the blade.
I am making a grass block model with tilted mats of grass hanging off of it, but the problem is, the mats of grass are only visible from the top. Is there any way I can make them visible from above and below?
UV lock prevents the textures from rotating when the rest of the model rotates. It is most notable on blocks such as stairs and fences, where the texture remains the same despite rotation of the same models.