So you say you can't paint
You don't have to. Instead tear up very thin napkins (MacKenzie type)
Partially cover clear glass balls with colored tissue paper
Use Elmers glue or similar
Now add a few colored dots here and there
And/Or
Pour one acrylic paint color at a time into clear glass ball and swirl in all directions.
See, I got you to paint after all.
Gina
Gina