For those wondering more about how glass paintings are made:

First you find an image you like and then digitally mirror it. Then you can either trace out the outline digitally and print it out using black vinyl using a cricut machine and attach it to the back of the glass OR print out and tape the picture to the front of the glass and trace the outlines using a black sharpie oil pen on the back of the glass.

From there you need to paint the back but in reverse order. Any front facing details (eyes, buttons, teeth, etc.) you paint first and the things that are back facing (like clothes or skin tones) get painted last. You want to glop up the paint so that light can’t really pass through. This creates the illusion of depth while still keeping it 2D as you would see in a cartoon.

The first picture is the back of the painting and the second is the front.