Heart 3D Printing Keychain

How might I the 3D Printing to Gabriel learn how they do.
Supplies
Machine, Tinker-cad, Computer, Design the draw.
Open Tinker-cad

In the first step you have to enter the application called Tinker-cad.
Design the Draw

In the second step you have to design the drawing you chose to fix it and make it the size it is.
You Need to Have the Draw Download
In the third step, since they have designed it, you have to download it and put it to go to the machine.
How Use the Machine

In the fourth step, since you have it downloaded, you choose a color in the machine for the drawing, then you look for the name in the machine, you click on the name and the design begins.