My name is Sergey Kotov,
I am a teacher at the Tomsk Polytechnic University, Russia.
We have prepared a short course of Tinkercad, on edX platform (local). The course is free, as an aid to schools and children, not a commercial.
And the work of students and children will be printed on a 3D printer.
After the training, we need to give the students some simple paper card on training. Not serious, simply as a result of training.
Prompt us how we can draw "comic certificates."
Perhaps you have some examples.