Hi Lillian: Here is a site that shows what some other Hometalkers did. They are awesome :)
A video tutorial!
What do you mean
Hi Lillian, here's some information that may assist you. I certainly hope so!
Lillian....No sure what you mean...can you explain what has happened? Thanks
Acrylic paint , cure the glass in oven at 200°F
On the inside
Here's a good tutorial on reverse painting on glass in general. You could apply it to your lampshade: https://www.wikihow.com/Create-a-Reverse-Painting-on-Glass
Make a reverse copy of what you wish to paint on the shade, then stick it to the outside of the shade and paint on the inside. When finished and dry, remove the tape holding the design and your picture should show through..............