This is my first post, I'm Gábor from Hungary.
I'm a very beginner user, until now, I was able to solve the simple puzzles, but this time, I have a tough one.
I usually use Inkscape for circuit board design and for front panel design.
Now, I'd like to re-create a weird touch pad, and I have only 1 photo from a working unit.
This is the "shape" / form, what I'd like to draw in Inkscape :

The only problem is that I don't know where to start?
How would it be symmetric?
Thannk you in advance for your help.