How to paint over the contour effect?

Question

Adobe After Effects

Good afternoon! Please tell me, I am inserting a vector image into after effects, then I am doing auto-trans, I am building a mask around the contour of Figure 1. How to make a mask like in Figure 2? It is necessary to paint over the contour not in a circle with a stroke effect, but to imitate drawing with a pencil. Maybe you know another way how to paint over the outline?

Answer 1

The description of the problem is not very clear.
Animation of lines/outlines is mostly done either through pure Trim paths or through the effect of layer masks through Trim paths, as shown here: https://www.youtube.com/watch?v=LcX566PdADI
The principle of outline animation of lettering and complex icons is the same.

Answer 2

I support Dmytro Korolkov , Nichrome is not clear, but very interesting.