Well after doing some research, I came across this tutorial.
I found this tutorial very helpful because it walks you through probably the simplest way to morph your face. Something cool about Spark AR is that they offer a lot of helpful assets for free. For example, the face mesh. I downloaded the face mesh and opened it in Maya.
This is the first step of creating a face morph filter. Basically how the program does it is by attaching your face to the normal face mesh (shown above). Then, you morph the face mesh in Maya and import it back into Spark.
This is my face mesh after I was done morphing it. I imported this back into Spark and told the program to morph the normal mesh (with my face attached to it) to this one. Which leaves you with a pretty funny effect like this.
At first the filter was super small but I actually kind of liked it this way. But if I didn’t want to be small all I had to do was scale up the filter.
I was very happy with how the effect turned out and spent a bit of time just playing with the filter. I realize now it makes me look a ton like Tweety Bird.