A girlfriend saw my evil eyes for Xiaomi Mi Vacuum (https://www.thingiverse.com/thing:3495624) and she asked for Yoshi-Eyes for her cleaning robot.
So I did her the favour. :-D
The eyes should be located at about 6-7cm shifted left/right from the middle of the front sensor (to prevent interferences).
As all surfaces are curved, you will need support structures.
In this case I used Cura's tree-support.
For a better look, I recommend a layer hight of 0.12-0.16.