Sorry..I didn't take any pixs...but it's easy.
First I drew the tear drop with a pencil on the factory location.
Then with a 80 gauge drill bit ..I made the hole on the fender.
Then I glued a small piece of tree sprue to the inside of the fender..
right under the hole(important step..it holds the wire)... this will give it a "sunken" look...
then stretched sprue was glued to the outside in the teardrop shape.
I lightly brushed the stretched sprue with glue to soften the edges.
It gives it a raised profile...most of it gets sanded anyway.
Then it was given a light sanding..to finish ..a smaller drill bit was used
to install a 30 gauge wire antenna.
Shapes can be as simple as a diamond , heart or dual teardrops.
It is easy to see the glued piece of sprue added to the inside of the fender from the bottom.
Like I said before ..most of the stretched sprue on the outside is soften up with a light coat
of glue..then sanded.