Can i add custom features like hairstyle , skin tone , nose , ears etc?

If yes how can i add this in my react application

Hello and welcome to the forum,

yes, as mentioned on this topic: Custom asset templates

We have templates and instructions available for Facewear, Glasses, etc. You can find them here: Face | Asset Creation Guide

The above link is currently located under part 5 of our “Create Custom outfits” documentation: Create Custom Outfits | Ready Player Me.