Yes, it is interesting that even this fine detail could be created in a paint - it might be an art. Small rounding might look better, but this was my first attempt to create something like this.
For PCB this would be a failure, unless you want create a fuse.
Which line distance would you choose? 0,3mm (beam diameter) seems to be too wide. May be something between 0.15 ~ 0.2mm.
Just a result of some experimenting:
and a magnified detail:
