Hi folks
I would like to modify the pupil so it can be like a S letter. I am not satisfied with Photoshop result.

because the Iris doesn’t really match with the S symbol.
So I tried to build a procedural texture in maya starting with a circular ramp

But as you see I miss also a point, as how to start the ramp with my S ?
In the end I would like to add noise texture with an implode factor matching the S as a start.

With this kind of effect :

Below is the last render with photoshop texture on the left and procedural texture on the right (with better color). None of them really fit with the S symbol.

Any help to achieve the desire effect ?
thanks
Fransuaf