If you panic and try to clean off the paint while it is still wet, you will do more damage in the end. Smudging the paint will create an ultra-thin layer that later becomes almost impossible to remove.
As counter-intuitive as it seems, the more paint glopped onto the surface, the better. Here's why:
After you let the paint rest for several hours, begin working the edge with your fingernail. The entire glob should peel off in one piece, leaving no trace. This will work whether on the vinyl frame or the glass.
Smaller specks on the glass will come off easily with a razor blade.

