This is a alternative to Render-Mii, although it was good, it used a LOT of storage for MiiJS so now I'm using FFL.js by Ariankordi
After you have cloned this repo and installed dependencies (using npm install--ignore-scripts ), you need to install MY version of FFL.js from this fork: https://github.com/Whatsauser/FFL.js Then you have to use my fork of three.js so the server doesn't crash https://github.com/Whatsauser/three and install opentype using the command below
npm install opentype.js mp4box