How to paint glass

https://www.hometalk.com/diy/how-to-paint-glass-1883465

https://www.hometalk.com/diy/decorate/rooms/how-to-paint-glass-and-metal-15905415

It depends on the purpose. If merely decorative, you can paint most any type of paint.

Where is the glass, and how is it going to be used after it is painted?

Here is one method using unicorn spit. https://uniquecreationsbyanita.com/unicorn-spit-glass-vase/

Here is a great run down on different types of paints for glass and their uses:

https://www.hometalk.com/diy/decorate/rooms/how-to-paint-glass-28566624

You can use multi-surface paint (Folk Art is great) or you can use Gallery Glass.

Here are a couple posts to show you examples of each -

https://chascrazycreations.com/how-to-make-garden-dish-flowers/

https://chascrazycreations.com/faux-stain-glass-sun-cather/

This video may be helpful:

https://www.youtube.com/watch?v=S2dn_VZITx0

Hi Betty, there are many paints that will adhere well to glass. it will depend on your project and what it is being used for as to which brand would be best. Here is one project I did with the glass painted. The intention was for it to be hung in a spot where it would be exposed to the elements so I covered the paint and glass with a clear coat after painting it for protection. http://www.recreateddesigns.com/2019/03/cheap-easy-upcycle-window-privacy-art-diy/

Hi Betty, here's a few ways, hope they help you out!

https://www.youtube.com/watch?v=S2dn_VZITx0

https://www.youtube.com/watch?v=ajhunyGDkK8

https://www.youtube.com/watch?v=vmTjyZ5uR9c

You can make something that looks like faux stained glass with these paints: https://decoart.com/glass-paint/glass-stain

Spray paint

Here's a tutorial that might help - https://chascrazycreations.com/painting-glass-diy-guide-and-tips/