The base skull design is by macouno on Thingiverse. File is called "Lisa the printable skull." I designed many of the decorative elements on this calavera in Illustrator and imported as .svg files into Tinkercad.
I will be teaching a teen 3D design workshop at San Jose's Dr. Roberto Cruz Library, San Jose on September 25th and October 2nd from 4:00-5:30 on each day. A selection of teen Dia de los Muertos calavera designs will be 3D printed with glow-in-dark filament & displayed in the library.