Quick tutorial I made on how to increase your brightness in Minecraft Java edition without mods or shaders.

Logdotzip shows how to morph into anything in Minecraft using a 1.14 datapack with full transformation mechanics.

If you're on a free account, you can instead use the Google Flow tool. If you're a paid user, you can click the Create video button, choose a template if you wish, describe the scene and characters, ...