Make this sentence grammatically correct. My grandmother a true artist decided it was time for me to learn to paint
My grandmother, a true artist, decided it was time for me to learn to paint.
"My grandmother, a true artist, decided it was time for me to learn to paint."
To make this sentence grammatically correct, you can add a verb to complete the sentence. Here's an example:
"My grandmother, a true artist, decided that it was time for me to learn to paint."